The greatest induced EMF will occur in a straight wire moving at constant speed through a uniform magnetic field when the angle between the direction of the wire's motion and the direction of the magnetic field is w) 0 degrees x) 30 degrees y) 60 degrees z) 90 degrees

1 Answer

Answer :

ANSWER: Z -- 90 DEGREES

Related questions

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

Description : An ELECTRON moving horizontally along the +x axis enters a region of space with a horizontal uniform magnetic field pointing in the +y direction. The electron will be deflected: w) -y direction x) +y direction y) -z direction z) +z direction

Last Answer : ANSWER: Y -- -Z DIRECTION

Description : A light ray traveling in benzene strikes the benzene-air surface at the critical angle. The angle of refraction of the light ray is: w) 30 degrees x) 60 degrees y) 90 degrees z) 180 degrees

Last Answer : ANSWER: Y -- 90 DEGREES

Description : An electron and a proton are moving at the same speed in circular paths in the same uniform magnetic field. The radius of the path of the proton is one of the following. Is this radius: w) the same ... of the electron y) a little larger than that of the electron z) smaller than that of the electron

Last Answer : ANSWER: X -- ABOUT 2000 TIMES LARGER THAN THAT OF THE ELECTRON

Description : A wire loop is moved parallel to a uniform magnetic field. The induced emf in the loop: a. depends on the shape b. depends on area c. depends on nature of loop d. zero

Last Answer : d. zero

Description : For an object moving in uniform circular motion, the direction of the instantaneous acceleration vector is: w) tangent to the path of motion x) equal to zero y) directed radially outward z) directed radially inward

Last Answer : ANSWER: Z -- DIRECTED RADIALLY INWARD

Description : A straight wire of length 0.20 m moves at a steady speed of 3.0 m s-1 at right angles to the magnetic field of flux density 0.10 T. The e.m.f induced across ends of wire is A. 0.5 V B. 0.06 V C. 0.05 V D. 0.04 V

Last Answer : 0.06 V

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

Description : When light is reflected from a surface, the angle of incidence is: w) 30 degrees x) equal to the angle of reflection y) 90 degrees z) 180 degrees

Last Answer : ANSWER: X -- EQUAL TO THE ANGLE OF REFLECTION

Description : A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the left of vertical. Which of the following answers could explain this phenomena? w ... is moving with constant velocity to the right. z) The railroad car is accelerating to the right.

Last Answer : ANSWER: Z -- THE RAILROAD CAR IS ACCELERATING TO THE RIGHT. 

Description : A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the right of vertical. Which of the following answers could explain this phenomena? ... is moving with constant velocity to the right. z) The railroad car is accelerating to the right.

Last Answer : ANSWER: X -- THE RAILROAD CAR IS ACCELERATING TO THE LEFT. 

Description : A charged particle is moving in a UNIFORM magnetic field. If the direction of motion of the charged particle is at right angles to the magnetic field, describe the shape of the charged particle's path.

Last Answer : ANSWER: CIRCULAR or CIRCLE

Description : A charged particle is moving in a UNIFORM magnetic field. If the direction of motion of the charged particle is parallel to the magnetic field, describe the shape of the charged particle's path. 

Last Answer : ANSWER: STRAIGHT LINE

Description : The equation, X = A cos(wt + f) (read: X equals A times the cosine of omega t + phi (fee)), can represent an expression for: w) accelerating due to gravity x) uniform straight line motion y) dc current z) a simple harmonic oscillator

Last Answer : ANSWER: Z -- A SIMPLE HARMONIC OSCILLATOR

Description : The force on a charged particle moving parallel to magnetic field lines is: w) in the direction of the field x) zero y) perpendicular to the field z) in the opposite direction of the field

Last Answer : ANSWER: X -- ZERO

Description : A car is moving along a straight horizontal road at a speed of 20 meters per second. The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop in 10 seconds. The mass of the car is: w) 1250 kilograms x) 2500 kilograms y) 5000 kilograms z) 10,000 kilograms

Last Answer : ANSWER: X -- 2500 KILOGRAMS

Description : The angle between the velocity and acceleration of a body is: w) never 90 degrees x) never 180 degrees y) sometimes 180 degrees z) never 0 degrees

Last Answer : ANSWER: Y -- SOMETIMES 180 DEGREES

Description : In the mass spectrograph, two positively charged ions having the same velocity pass through a slit and enter a uniform magnetic field at right angles to their initial velocities. The ions will NOT be ... charges and their masses are equal z) the ratios of their charges to their masses are equal  

Last Answer : ANSWER: Z -- THE RATIOS OF THEIR CHARGES TO THEIR MASSES ARE EQUAL 

Description : In order for fiber optics to work, the incident light inside the fiber must hit the wall of the fiber at: w) 90 degrees x) 45 degrees y) an angle greater than the critical angle z) none of the above

Last Answer : ANSWER: Y -- AN ANGLE GREATER THAN THE CRITICAL ANGLE 

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

Description : For a straight wire, induced current depends uponA. the speed of movement of wire B. the length of wire C. the magnitude of magnetic flux density D. all of above

Last Answer : all of above

Description : In simple harmonic motion, the acceleration is: w) constant x) proportional to the distance from the central position y) greatest when the velocity is greatest z) none of the above

Last Answer : ANSWER: X -- PROPORTIONAL TO THE DISTANCE FROM THE CENTRAL POSITION

Description : Which of the following statements dealing with simple harmonic motion of a mass-spring system is TRUE? w) The acceleration is largest when the oscillating mass is instantaneously at rest. x) The ... of the motion. z) The acceleration is larger when the oscillating mass has its greatest velocity.

Last Answer : ANSWER: W -- THE ACCELERATION IS LARGEST WHEN THE OSCILLATING MASS IS INSTANTANEOUSLY AT REST 

Description : A projectile is fired into the air at an angle of 23 degrees. At what other angle would this projectile have the same range if air resistance is neglected? w) 46 degrees x) 60 degrees y) 67 degrees z) 68 degrees

Last Answer : ANSWER: Y -- 67 DEGREES

Description : A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each -Physics-10

Last Answer : half revolution When a rectangular coil is rotated in magnetic field, the direction of the induced current changes once in half revolution. As a result, the direction of the current in the coil remains the same. In text 13.7 Page:238

Description : A long straight wire along the `z`- axis carries a current ` I` in the negative ` z- direction` . The magnetic vector field ` vec(B)` at a point havin

Last Answer : A long straight wire along the `z`- axis carries a current ` I` in the negative ` z- direction` . The magnetic ... -yhat(j)))/(2pi(x^(2)+y^(2)))`

Description : A proton is moving in a uniform magnetic field B in a circular path of radius a in a direction perpendicular to Z- axis along which field B exists. Ca

Last Answer : A proton is moving in a uniform magnetic field B in a circular path of radius a in a direction perpendicular to Z- ... 2)a` C. `a^(2) eB` D. `aeB`

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

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 

Description : While traveling in a straight line, a car uniformly changes its speed from 50 kilometers per hour to 110 kilometers per hour in 5 seconds. The acceleration of the car during this time is: w) 5 ... per hour per second y) 50 kilometers per hour per second z) 60 kilometers per hour per second

Last Answer : ANSWER: X -- 12 KILOMETERS PER HOUR PER SECOND

Description : A particle is moving in a uniform circular motion with constant speed v along a circle of radius r. The acceleration-of the particle is – (1) zero (2) V/r (3) V/r² (4) V²/r

Last Answer : (4) V²/r Explanation: When a particle is moving in a uniform circular motion with constant speed and radius. the acceleration of the particle is given by v2/r. The particle will exhibit centripetal acceleration.

Description : A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction. Is it: w) red x) yellow y) blue z) violet

Last Answer : ANSWER: W -- RED

Description : A beam of protons with a velocity of `4 X 10 ^5 ms^(-1)` enters a uniform magnetic field of 0.3 T. The velocity makes an angle of `60^@` with the magn

Last Answer : A beam of protons with a velocity of `4 X 10 ^5 ms^(-1)` enters a uniform magnetic field of 0.3 T. The ... ` B. `0.012m` C. `0.024m` D. `0.048m`

Description : On meter length of wires carriers a constant current. The wire is bent to from a circular loop. The magnetic field at the centre of this loop is `B`.

Last Answer : On meter length of wires carriers a constant current. The wire is bent to from a circular loop. The magnetic field at ... B. `4B` C. `B/4` D. `16B`

Description : The crack of a bullwhip results from the bullwhip's tip: w) approaching the speed of sound x) exceeding the speed of sound y) moving with constant velocity z) none of the above

Last Answer : ANSWER: X -- EXCEEDING THE SPEED OF SOUND

Description : According to standard convention, the angles of incidence and reflection for a plane surface are measured from: w) the reflecting surface x) lines at 45 degrees to the reflecting surface y) a line at 90 degrees to the reflecting surface z) there is no standard

Last Answer : ANSWER: Y -- A LINE AT 90 DEGREES TO THE REFLECTING SURFACE

Description : A satellite is observed to move in a circle about the earth at a constant speed. This means that the force acting upon it is: w) zero x) parallel to the direction of the satellite ... velocity y) perpendicular to the direction of the satellite's instantaneous velocity z) none of the above

Last Answer : ANSWER: Y -- PERPENDICULAR TO THE INSTANTANEOUS DIRECTION OF THE SATTELITE’S VELOCITY

Description : Newton's first law is often referred to as which of the following? w) The law of straight-line motion. x) The law of momentum y) The law of inertia z) F = ma (Spell out M-A)

Last Answer : ANSWER: Y -- THE LAW OF INERTIA

Description : Force on a moving charge in a uniform magnetic field depends uponA. magnetic flux density B. the charge on the particle C. the speed of particle D. all of above

Last Answer : all of above

Description : An incident ray comes in parallel to the principle axis of a concave mirror. Is it reflected: w) back along the incident ray x) at 30 degrees to incident ray y) through the focal point z) through the center of curvature

Last Answer : ANSWER: Y -- THROUGH THE FOCAL POINT 

Description : A gas at 0 degrees C and at normal atmospheric pressure has a volume of 273 cubic centimeters. If it is held at constant pressure until its volume is doubled, its temperature will be which one of the ... it be w) 2 degrees Celsius x) 200 degrees Celsius y) 273 degrees Celsius z) 546 degrees Celsius

Last Answer : ANSWER: Y -- 273 DEGREES CELSIUS

Description : As the temperature of the air increases from 0 degrees C to 20 degrees C, the wavelength of a sound made by a tuning fork of fixed frequency does which of the following? Does the wavelength w) increase x) decrease y) remain the same z) increase up to a maximum, then remain constant

Last Answer : ANSWER: W -- INCREASE

Description : The speed of light through a single-mode optical fiber is approximately: w) c (equal to 3 x 108 m/s) x) 70 percent of c y) 80 percent of c z) 90 percent of c

Last Answer : ANSWER: X -- 70 PERCENT OF c

Description : In the United States the average number of gallons per person of fresh water used per day for personal (non-industrial) use such as bathing, laundering, drinking, and the like is approximately: w) 10 gallons x) 30 gallons y) 60 gallons z) 90 gallons 

Last Answer : ANSWER: Z -- 90 GALLONS

Description : Two infinitely long, thin, insulated, straight wires lie in the x-y plane along the x- and y- axis respectively. Each wire carries a current I, respec

Last Answer : Two infinitely long, thin, insulated, straight wires lie in the x-y plane along the x- and y- axis respectively. Each ... x C. y = x-1 D. y = -x+1

Description : The induced emf is produced in a circuit due to: a. Initial magnetic flux b. final magnetic flux c. Change of magnetic flux d. constant magnetic flux

Last Answer : d. constant magnetic flux

Description : A light ray traveling from glass into air strikes the glass-air surface at an angle 50 degrees to the normal. If the critical angle for the glass-air combination is 42 degrees, the percentage of light reflected from the surface is w) 6 x) 25 y) 38 z) 100

Last Answer : ANSWER: Z -- 100

Description : A moving particle of charge q and mass m enters a uniform magnetic field perpendicular to the direction of field. Then

Last Answer : A moving particle of charge q and mass m enters a uniform magnetic field perpendicular to the ... circular path (D) its velocity vector changes

Description : The induced emf in a coil depends upon: a. Strength of magnetic field b. Resistance of the coil c. area of the coil d. All of them

Last Answer : d. All of them

Description : In the figure shown, a conducting wire PQ of length l=1m, is moved in a uniform magnetic field B=4T with constant velocity v=2m/s towards right. Given

Last Answer : In the figure shown, a conducting wire PQ of length l=1m, is moved in a uniform magnetic field B=4T with ... P_(2) = 32 J//s` D. None of these