Magnetic fields are produced by: w) resistance x) an electric potential difference y) electric current z) stationary charge

Magnetic fields are produced by: w) resistance x) an electric potential difference y) electric current z) stationary charge
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ANSWER: Y -- CURRENT 
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For a point charge to feel a net force in a homogeneous magnetic field, which one of the following statements is true? The charge must: w) move parallel to the magnetic lines of flux x) have a component of its motion perpendicular to the lines of flux y) be stationary z) be a positive charge

Description : For a point charge to feel a net force in a homogeneous magnetic field, which one of the following statements is true? The charge must: w) move parallel to the magnetic lines of flux x) have a component of its motion perpendicular to the lines of flux y) be stationary z) be a positive charge

Last Answer : ANSWER: X -- HAVE A COMPONENT OF ITS MOTION PERPENDICULAR TO THE LINES OF FLUX 

In the Millikan oil-drop experiment the UPWARD force on the drop is due to the: w) gravitational and electric fields x) gravitational field and the charge on the drop y) electric field and the size of the drop z) electric field and the charge on the drop

Description : In the Millikan oil-drop experiment the UPWARD force on the drop is due to the: w) gravitational and electric fields x) gravitational field and the charge on the drop y) electric field and the size of the drop z) electric field and the charge on the drop

Last Answer : ANSWER: Z -- ELECTRIC FIELD AND THE CHARGE ON THE DROP 

In an electromagnetic wave, what is the relative orientation of the magnetic and electric fields? w) 180 degrees x) 90 degrees y) 45 degrees z) 22.5 degrees

Description : In an electromagnetic wave, what is the relative orientation of the magnetic and electric fields? w) 180 degrees x) 90 degrees y) 45 degrees z) 22.5 degrees

Last Answer : ANSWER: X -- 90 DEGREES

Ten coulombs of charge are placed on a solid copper sphere. Once the charge has come to rest, the ELECTRIC POTENTIAL inside the sphere is found to be: w) zero x) uniform inside the sphere and equal to the electric potential on the surface of the sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared

Description : Ten coulombs of charge are placed on a solid copper sphere. Once the charge has come to rest, the ELECTRIC POTENTIAL inside the sphere is found to be: w) zero x) uniform inside the sphere and ... the sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared

Last Answer : ANSWER: X -- UNIFORM INSIDE THE SPHERE AND EQUAL TO THE ELECTRIC POTENTIAL ON THE SURFACE OF THE SPHERE 

When a charge moves through an electric circuit in the direction of an electric force it does one of the following four things. Does it: w) lose potential energy and gain kinetic energy x) gain potential energy and lose kinetic energy y) lose both potential and kinetic energy z) gain both potential and kinetic energy

Description : When a charge moves through an electric circuit in the direction of an electric force it does one of the following four things. Does it: w) lose potential energy and gain kinetic energy x) ... lose kinetic energy y) lose both potential and kinetic energy z) gain both potential and kinetic energy

Last Answer : ANSWER: W -- LOSE POTENTIAL ENERGY AND GAIN KINETIC ENERGY

Five coulombs of charge are placed on a thin-walled conducting shell. Once the charge has come to rest, the electric potential inside the hollow conducting shell is found to be: w) zero x) uniform inside the sphere and equal to the electric potential on the surface of the sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared.

Description : Five coulombs of charge are placed on a thin-walled conducting shell. Once the charge has come to rest, the electric potential inside the hollow conducting shell is found to be: w) zero x) uniform ... sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared.

Last Answer : ANSWER: X -- UNIFORM INSIDE THE SPHERE AND EQUAL TO THE ELECTRIC OTENT

The magnetic field produced by a long straight wire carrying a current points: w) in the direction of the current x) toward the wire y) away from the wire z) circles around the wire

Description : The magnetic field produced by a long straight wire carrying a current points: w) in the direction of the current x) toward the wire y) away from the wire z) circles around the wire

Last Answer : ANSWER: Z -- CIRCLES AROUND THE WIRE

The potential drop between the terminals of a battery is equal to the battery's EMF when: w) no current is drawn from the battery x) a very large current is drawn from the battery y) the internal resistance of the battery is very large z) the resistance in the external circuit is small

Description : The potential drop between the terminals of a battery is equal to the battery's EMF when: w) no current is drawn from the battery x) a very large current is drawn from the battery y) the internal resistance of the battery is very large z) the resistance in the external circuit is small 

Last Answer : ANSWER: W -- NO CURRENT IS DRAWN FROM THE BATTERY

Which one of the following statement is incorrect regarding the electromagnetic radiation? (A) These are produced by the motion of electric charge (B) The oscillation of charged particles sets up changing electric fields (C) The changing electric fields induce the changing magnetic fields in the surrounding medium (D) None of these

Description : Which one of the following statement is incorrect regarding the electromagnetic radiation? (A) These are produced by the motion of electric charge (B) The oscillation of charged particles sets up ... electric fields induce the changing magnetic fields in the surrounding medium (D) None of these

Last Answer : Answer: Option D

Photoelectric electricity is produced directly from solar energy when which of the following are absorbed in a semiconductor to create an electric current? w) protons x) electrons y) neutrons z) photons

Description : Photoelectric electricity is produced directly from solar energy when which of the following are absorbed in a semiconductor to create an electric current? w) protons x) electrons y) neutrons z) photons

Last Answer : ANSWER: Z -- PHOTONS

Alpha rays are different from beta rays in one of the following ways. Are they different since: w) alpha rays are deflected in a magnetic field and beta rays are not x) alpha rays are identical to the electron in mass, and beta rays are not y) alpha rays have a positive charge and beta rays have a negative charge z) alpha rays are produced within the nucleus and beta rays are produced outside the nucleus

Description : Alpha rays are different from beta rays in one of the following ways. Are they different since: w) alpha rays are deflected in a magnetic field and beta rays are not x) alpha rays are ... negative charge z) alpha rays are produced within the nucleus and beta rays are produced outside the nucleus 

Last Answer : ANSWER: Y -- ALPHA RAYS HAVE A POSITIVE CHARGE AND BETA RAYS HAVE A NEGATIVE CHARGE

A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero

Description : A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero

Last Answer : ANSWER: W -- CONSTANT

The electric field of a point charge varies: w) linearly with distance and inversely with charge x) linearly with distance and inversely with charge squared y) linearly with charge and inversely with distance squared z) linearly with charge and inversely with distance

Description : The electric field of a point charge varies: w) linearly with distance and inversely with charge x) linearly with distance and inversely with charge squared y) linearly with charge and inversely with distance squared z) linearly with charge and inversely with distance 

Last Answer : ANSWER: Z -- LINEARLY WITH CHARGE AND INVERSELY WITH DISTANCE  

The magnitude of the quarks' electric charge is: w) zero. x) greater than the electron's charge. y) equal to the electron's charge. z) less than the electron's charge.

Description : The magnitude of the quarks' electric charge is: w) zero. x) greater than the electron's charge. y) equal to the electron's charge. z) less than the electron's charge.

Last Answer : ANSWER: Z -- LESS THAN THE ELECTRON'S CHARGE. 

In the equation of a nuclear reaction, all but one of the following quantities are equal to each other on both sides of the equation. Which quantity is NOT conserved: w) the net electric charge x) the total mass-energy y) the number of protons z) the number of nucleons

Description : In the equation of a nuclear reaction, all but one of the following quantities are equal to each other on both sides of the equation. Which quantity is NOT conserved: w) the net electric charge x) the total mass-energy y) the number of protons z) the number of nucleons

Last Answer : ANSWER: Y -- THE NUMBER OF PROTONS

Ten coulombs of positive charge are placed on an irregularly-shaped, solid piece of copper. Once the charge has stopped moving, the electric field inside the copper is: w) zero x) changes as one over the radius squared y) becomes smaller as you approach the center z) becomes larger as you approach the center

Description : Ten coulombs of positive charge are placed on an irregularly-shaped, solid piece of copper. Once the charge has stopped moving, the electric field inside the copper is: w) zero x) changes as one ... squared y) becomes smaller as you approach the center z) becomes larger as you approach the center

Last Answer : ANSWER: W -- ZERO

The law that relates the electric field at the surface of a region to the amount of charge inside the region is called: w) Coulomb's Law x) Faraday's Law y) Gauss' Law z) Biot-Savart Law

Description : The law that relates the electric field at the surface of a region to the amount of charge inside the region is called: w) Coulomb's Law x) Faraday's Law y) Gauss' Law z) Biot-Savart Law

Last Answer : ANSWER: Y -- GAUSS' LAW

The Millikan experiment showed that electric charge was: w) negative x) quantized y) positive z) unmeasurable

Description : The Millikan experiment showed that electric charge was: w) negative x) quantized y) positive z) unmeasurable

Last Answer : ANSWER: X -- QUANTIZED

For an infinite sheet of positive charge, the electric field lines: w) run parallel to the sheet of charge x) are perpendicular to the sheet of charge and point in toward the sheet y) are perpendicular to the sheet of charge and point away from the sheet z) fall off as one over r squared

Description : For an infinite sheet of positive charge, the electric field lines: w) run parallel to the sheet of charge x) are perpendicular to the sheet of charge and point in toward the sheet y) are perpendicular to the sheet of charge and point away from the sheet z) fall off as one over r squared

Last Answer : ANSWER: Y -- ARE PERPENDICULAR TO THE SHEET OF CHARGE AND POINT AWAY  

For a negative point charge, the electric field vectors: w) circle the charge x) point radially in toward the charge y) point radially away from the charge z) cross at infinity

Description : For a negative point charge, the electric field vectors: w) circle the charge x) point radially in toward the charge y) point radially away from the charge z) cross at infinity

Last Answer : ANSWER: X -- POINT RADIALLY IN TOWARD THE CHARGE

A firecracker is placed in the middle of a cluster of stationary billiard balls. The firecracker-billiard ball system sits on a frictionless surface. As the firecracker explodes, the balls scatter. What is the momentum of the SYSTEM after the explosion of the firecracker? w) greater than the momentum of the system before the explosion x) equal to the combined speed of the balls y) equal to the mass of the balls z) zero

Description : A firecracker is placed in the middle of a cluster of stationary billiard balls. The firecracker-billiard ball system sits on a frictionless surface. As the firecracker explodes, the balls scatter. What is the momentum ... to the combined speed of the balls y) equal to the mass of the balls z) zero

Last Answer : ANSWER: Z -- ZERO

Two hockey pucks, of unequal mass and connected by a spring of negligible mass, rest on a horizontal frictionless surface. The spring is released, and the pucks move apart. The center of mass of the two pucks does one of the following. Does it: w) move in a circle x) move in the direction of the greater mass y) remain stationary z) move in the direction of the smaller mass

Description : Two hockey pucks, of unequal mass and connected by a spring of negligible mass, rest on a horizontal frictionless surface. The spring is released, and the pucks move apart. The center of mass of ... the direction of the greater mass y) remain stationary z) move in the direction of the smaller mass

Last Answer : ANSWER: Y -- REMAIN STATIONARY

In the Compton effect, a photon of wavelength l (read: lambdw) collides with a stationary electron. The wavelength of the emitted photon is: w) longer than l x) shorter than l y) the same as l z) no photon is emitted

Description : In the Compton effect, a photon of wavelength l (read: lambdw) collides with a stationary electron. The wavelength of the emitted photon is: w) longer than l x) shorter than l y) the same as l z) no photon is emitted

Last Answer : ANSWER: W -- LONGER THAN l

What law describes the force between two stationary electrically charged objects? w) Ampere's law x) Coulomb's law y) Kirchoff's Rules (pron: kir-koff rules) z) Ohm's law

Description : What law describes the force between two stationary electrically charged objects? w) Ampere's law x) Coulomb's law y) Kirchoff's Rules (pron: kir-koff rules) z) Ohm's law

Last Answer : ANSWER: X -- COULOMB'S LAW

Three capacitors with different capacitances are connected in series. Which of the following statements is TRUE? w) All three of the capacitors have the same potential difference between their plates. x) The magnitude of the charge is the same on all of the capacitor plates. y) The capacitance of the system depends on the voltage applied across the three capacitors.

Description : Three capacitors with different capacitances are connected in series. Which of the following statements is TRUE? w) All three of the capacitors have the same potential difference between their plates. x ... y) The capacitance of the system depends on the voltage applied across the three capacitors.

Last Answer : ANSWER: X -- THE MAGNITUDE OF THE CHARGE IS THE SAME ON ALL OF THE CAPACITOR PLATES

The shape of a magnetic field around a long straight current carrying wire is: w) elliptical. x) square y) varies depending on the magnitude of the current z) circular

Description : The shape of a magnetic field around a long straight current carrying wire is: w) elliptical. x) square y) varies depending on the magnitude of the current z) circular

Last Answer : ANSWER: Z -- CIRCULAR

The Weber and the Maxwell are units of measure of: w) conductance x) electrical current y) magnetic flux z) relative speed

Description : The Weber and the Maxwell are units of measure of: w) conductance x) electrical current y) magnetic flux z) relative speed

Last Answer : ANSWER: Y -- MAGNETIC FLUX

The Tesla and the Gauss are units of measure of: w) conductance x) magnetic field strength y) magnetic flux z) electrical current

Description : The Tesla and the Gauss are units of measure of: w) conductance x) magnetic field strength y) magnetic flux z) electrical current

Last Answer : ANSWER: X -- MAGNETIC FIELD STRENGTH

A copper rod which is 1 centimeter in diameter carries a current of 5 amps. The current is distributed uniformly throughout the rod. The magnetic field half way between the axis of the rod and its outside edge is: w) zero. x) pointing radially outward y) pointing radially inward z) circles the axis of the rod

Description : A copper rod which is 1 centimeter in diameter carries a current of 5 amps. The current is distributed uniformly throughout the rod. The magnetic field half way between the axis of the rod and its ... ) zero. x) pointing radially outward y) pointing radially inward z) circles the axis of the rod

Last Answer : ANSWER: Z -- CIRCLES THE AXIS OF THE ROD

An infinitely long wire carries a current of three amps. The magnetic field outside the wire: w) points radially away from the wire x) points radially inward y) circles the wire z) is zero.

Description : An infinitely long wire carries a current of three amps. The magnetic field outside the wire: w) points radially away from the wire x) points radially inward y) circles the wire z) is zero.

Last Answer : ANSWER: Y -- CIRCLES THE WIRE

The waves associated with electric and magnetic fields, resulting from the acceleration of an electric charge are called

Description : The waves associated with electric and magnetic fields, resulting from the acceleration of an electric charge are called

Last Answer : electromagnetic waves.

Rate of flow of electric charge is A. electric current B. conventional current only C. electronic current only D. potential difference

Description : Rate of flow of electric charge is A. electric current B. conventional current only C. electronic current only D. potential difference

Last Answer : electric current

Electric current may be expressed in which one of the following units? w) coulombs/volt x) joules/coulomb y) coulombs/second z) ohms/second

Description : Electric current may be expressed in which one of the following units? w) coulombs/volt x) joules/coulomb y) coulombs/second z) ohms/second

Last Answer : ANSWER: Y -- COULOMBS/SECOND

Which is NOT a characteristic of a series circuit? w) The current is the same throughout. x) The total resistance is the sum of the individual resistance. y) The voltage of the source equals the sum of the circuit's individual voltage drops. z) The total resistance is the sum of the reciprocals of the individual resistances.

Description : Which is NOT a characteristic of a series circuit? w) The current is the same throughout. x) The total resistance is the sum of the individual resistance. y) The voltage of the source ... individual voltage drops. z) The total resistance is the sum of the reciprocals of the individual resistances.

Last Answer : ANSWER: Z -- THE TOTAL RESISTANCE IS THE SUM OF THE RECIPROCALS OF THE RECIPROCAL OF THE INDIVIDUAL RESISTANCES.

What kinds of waves are produced by disturbances in electric and magnetic fields?

Description : What kinds of waves are produced by disturbances in electric and magnetic fields?

Last Answer : Feel Free to Answer

Gamma rays are similar to X rays in which of the following ways? w) they have neither rest mass nor charge x) they can be bent in an electric field y) they originate within the nucleus z) they are of low energy

Description : Gamma rays are similar to X rays in which of the following ways? w) they have neither rest mass nor charge x) they can be bent in an electric field y) they originate within the nucleus z) they are of low energy

Last Answer : ANSWER: W -- HAVE NEITHER REST MASS NOR CHARGE

When the front of a glacier is stationary for a long time, the glacier will do which of the following? w) form many crevasses x) melt away y) not erode its bed z) build a large terminal moraine

Description : When the front of a glacier is stationary for a long time, the glacier will do which of the following? w) form many crevasses x) melt away y) not erode its bed z) build a large terminal moraine

Last Answer : ANSWER: Z -- BUILD A LARGE TERMINAL MORAINE

Electric power is related to A. current in component B. potential difference C. electrical resistance D. both A and B

Description : Electric power is related to A. current in component B. potential difference C. electrical resistance D. both A and B

Last Answer : both A and B

As a source of sound approaches a stationary listener, the apparent wavelength: w) increases x) decreases y) stays the same.

Description : As a source of sound approaches a stationary listener, the apparent wavelength: w) increases x) decreases y) stays the same. 

Last Answer : ANSWER: X -- DECREASES

What are the OBSERVED differences between electric and magnetic fields?

Description : What are the OBSERVED differences between electric and magnetic fields?

Last Answer : answer:A changing magnetic field creates an electric current (a flow of electrically charged material). A changing electric current, in turn, creates a magnetic field.

Fields that act on objects with masses are A. electric fieldsB. magnetic fields C. force fields D. gravitational fields

Description : Fields that act on objects with masses are A. electric fieldsB. magnetic fields C. force fields D. gravitational fields

Last Answer : gravitational fields

An object with a mass of 5 kilograms is a distance of 5 meters above the surface of the earth. If the acceleration due to gravity is 10 meters per second squared, the potential energy of the object relative to the surface of the earth is: w) 10 joules x) 20 joules y) 100 joules z) 250 joules e) none of the above

Description : An object with a mass of 5 kilograms is a distance of 5 meters above the surface of the earth. If the acceleration due to gravity is 10 meters per second squared, the potential energy of the object relative to the ... is: w) 10 joules x) 20 joules y) 100 joules z) 250 joules e) none of the above

Last Answer : ANSWER: Z -- 250 JOULES

The energy of molecular motion in a gas appears in the form of: w) friction x) internal energy y) temperature z) potential energy

Description : The energy of molecular motion in a gas appears in the form of: w) friction x) internal energy y) temperature z) potential energy

Last Answer : ANSWER: Y -- TEMPERATURE

The temperature of a gas measures the: w) number of calories of heat present x) average kinetic energy of the particles in the gas y) exact number of particles in the gas z) potential energy of the gas

Description : The temperature of a gas measures the: w) number of calories of heat present x) average kinetic energy of the particles in the gas y) exact number of particles in the gas z) potential energy of the gas

Last Answer : ANSWER: X -- AVERAGE KINETIC ENERGY OF THE PARTICLES IN THE GAS 

Energy stored in a body as thermal or internal energy consists of one of the following. Does it consist of: w) heat in the form of radiant energy x) molecular kinetic energy only y) molecular potential energy only z) both kinetic and potential energy

Description : Energy stored in a body as thermal or internal energy consists of one of the following. Does it consist of: w) heat in the form of radiant energy x) molecular kinetic energy only y) molecular potential energy only z) both kinetic and potential energy

Last Answer : ANSWER: Z -- BOTH KINETIC AND POTENTIAL ENERGY

In any collision, which of the following is conserved: w) kinetic energy x) velocity y) momentum z) potential energy

Description : In any collision, which of the following is conserved: w) kinetic energy x) velocity y) momentum z) potential energy

Last Answer : ANSWER: Y -- MOMENTUM

A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is: w) all converted into heat x) equal to its potential energy (with respect to the bottom of the plane) when it was at the top of the plane y) less than its kinetic energy at the top of the plane z) dependant on the materials of which the block is made

Description : A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is: w) all converted into heat x) equal to its ... kinetic energy at the top of the plane z) dependant on the materials of which the block is made 

Last Answer : ANSWER: X -- EQUAL TO ITS POTENTIAL ENERGY (WITH RESPECT TO THE BOTTOM OF PLANE) WHEN IT WAS AT THE TOP OF THE PLANE.

The gravitational potential energy between two bodies is inversely proportional to: w) the cube of the distance x) the first power of the distance y) the square of the distance z) it has no relation to distance

Description : The gravitational potential energy between two bodies is inversely proportional to: w) the cube of the distance x) the first power of the distance y) the square of the distance z) it has no relation to distance

Last Answer : ANSWER: X -- THE FIRST POWER OF THE DISTANCE

When the velocity of an object is tripled, another quantity which is tripled at the same time is the object's: w) momentum x) potential energy y) kinetic energy z) mass

Description : When the velocity of an object is tripled, another quantity which is tripled at the same time is the object's: w) momentum x) potential energy y) kinetic energy z) mass

Last Answer : ANSWER: W -- MOMENTUM

The gravitational potential energy of an object close to the ground varies: w) inversely as its distance from the ground x) directly as its distance from the ground y) inversely as the square of its distance from the ground z) directly as the square of its distance from the ground

Description : The gravitational potential energy of an object close to the ground varies: w) inversely as its distance from the ground x) directly as its distance from the ground y) inversely as the square of its distance from the ground z) directly as the square of its distance from the ground 

Last Answer : ANSWER: X -- DIRECTLY AS ITS DISTANCE FROM THE GROUND