Description : An electron moves into the electrostatic field between a positive charge and a negative charge. Toward which charge will the electron move?
Last Answer : Toward the positive charge.
Description : What will be the effect upon an electron traveling in the opposite direction to the lines of force in an electrostatic field?
Last Answer : The electron will be accelerated.
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
Description : Why are the electrostatic fields between the electron gun elements called lenses?
Last Answer : Because they bend electron streams in much the same manner that optical lenses bend light rays.
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
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
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
Description : Electron-withdrawing groups are meta directors because : (a) the carbonium ion intermediate has a negative charge on the meta position. (b) the more stable resonance hybrid occurs with meta ... the electrophile. (d) the carbonium ion intermediate has a positive charge on the meta position
Last Answer : the more stable resonance hybrid occurs with meta attachment of the electrophile.
Description : When a semiconductor is doped with a P-type impurity, each impurity atom will (A) acquire negative charge. (B) acquire positive charge. (C) remain electrically neutral. (D) give away one electron.
Last Answer : (A) acquire negative charge.
Description : How is the electron beam of a three-cavity klystron accelerated toward the drift tube?
Last Answer : A large negative pulse is applied to the cathode.
Last Answer : The space between and around charged bodies.
Description : Electrons move at right angles to a magnetic field of `1.5xx10^(-2)` Tesla with a speed of `6xx10^(7)m//s`. If the specific charge of the electron is
Last Answer : Electrons move at right angles to a magnetic field of `1.5xx10^(-2)` Tesla with a speed of `6xx10^ ... C//kg`. The radius of the circular path will be
Description : Which of the following statements is incorrect? (a) Electrons move toward positively charged locations. (b) An electron-rich atom is called an electrophile. (c) An electrophile is electron loving. (d) A nucleophile has a a pair of electrons it can share
Last Answer : An electron-rich atom is called an electrophile.
Description : The charge density of a electrostatic field is given by a) Curl of E b) Divergence of E c) Curl of D d) Divergence of D
Last Answer : d) Divergence of D
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 : A particle of mass `m` and charge `q` moves with a constant velocity `v` along the positive `x` direction. It enters a region containing a uniform mag
Last Answer : A particle of mass `m` and charge `q` moves with a constant velocity `v` along the positive `x` direction. It enters ... `qaB//m` D. `q(b + a)B//2m`
Description : An electron moves in a circular orbit with a uniform speed `v`.It produces a magnetic field `B` at the centre of the circle. The radius of the circle
Last Answer : An electron moves in a circular orbit with a uniform speed `v`.It produces a magnetic field `B` at the centre of the ... (v)/(B))` D. `sqrt((B)/(v))`
Description : An electron moves with a velocity of 2 × 106 ms-1 in the direction of a uniform magnetic field of 0.8 Tesla. The force on electron is a) 8 N b) 2 N c) 4 N d) Zero
Last Answer : d) Zero
Description : Critical path moves along the activities having total float as (a) Positive (b) Negative ( c) Zero (d) Unity
Last Answer : ( c) Zero
Description : What term is used to describe the definite discrete amounts of energy required to move an electron from a low shell to a higher shell?
Last Answer : Quanta.
Description : A point charge q moves from A to B along a parabolic(x2 =2ay) path (AB is latus rectum). Electric field is along x-axis. The work done by the field is
Last Answer : A point charge q moves from A to B along a parabolic(x2 =2ay) path (AB is latus rectum). Electric field is ... qEa` B. `+qEa` C. `-2qEa` D. `2qEa`
Description : In what way do magnetic lines of force differ from electrostatic lines of force?
Last Answer : Electrostatic lines of force do not form closed loops
Description : In what direction are electrostatic lines of force drawn?
Last Answer : Leaving positive, entering negative
Description : A MOSFET can be damaged by an electrostatic discharge at approximately what minimum potential?
Last Answer : 35 volts.
Description : At approximately what minimum voltage potential should you be able to feel an electrostatic discharge?
Last Answer : 3,500 to 4,000 volts.
Description : State four characteristics of electrostatic lines of force
Last Answer : a charged particle in straight lines and do not form closed loops. c. They have the ability to pass through any known material. d. They have the ability to distort the orbits of electrons circling the nucleus.
Description : State four characteristics of electrostatic lines of forceNEETS
Last Answer : a. They are polarized from positive to negative. b. They radiate from a charged particle in straight lines and do not form closed loops. c. They have the ability to pass through any known material. d. They have the ability to distort the orbits of electrons circling the nucleus.
Description : In Rutherford's experiment involving the deflection of alpha particles by atomic nuclei, the fact that some of the alpha particles bombarding the thin gold foil were back-scattered, led to one of the ... its nucleus z) the nucleus of a gold atom occupies nearly the entire space of the atom
Last Answer : ANSWER: Y -- MOST OF THE MASS OF A GOLD ATOM IS IN ITS NUCLEUS
Description : In a hydrogen like ionized atom a single electron is orbiting around the stationary positive charge. If a spectral line of `lambda` equal to `4861Å` i
Last Answer : In a hydrogen like ionized atom a single electron is orbiting around the stationary positive charge. If a ... to `n=6` and also identify the element.
Description : What is the Particle in a nucleus of an atom it has a positive electrical charge and it's 2000 times the mass of the electron?
Last Answer : protonthere is no such thing as an electrical charged nut there issuch a thing as a charged particle, that is also known asneutron
Description : Positron is a/an (A) Nucleus having two protons (B) Helium nucleus (C) Electron with positive charge (D) Nucleus with one proton and one neutron
Last Answer : (C) Electron with positive charge
Description : Direction of conventional current is A. direction of neutron flow B. direction of electron flow C. direction of flow of positive charge D. same as that of electric current
Last Answer : direction of flow of positive charge
Description : Which of the following statements is correct regarding nucleophiles? (a) They have an overall positive charge (b) They have a lone-pair of electrons (c) They have an unpaired electron (d) They have empty orbitals
Last Answer : (b) They have a lone-pair of electrons
Description : Someone is walking toward you , it's crowded. Who moves and why?
Last Answer : Many times I will move when I am in a hurry.Sometimes I will dance with people. A few times I have stood there like a brick wall if I am feeling sassy. It is all dependent on my mood.:)
Description : Which of the following conditions indicates a short circuited capacitor when checking its condition with an ohmmeter? A. The capacitor shows charging, but the final resistance reading is appreciably less ... moves quickly to the low resistance side of the scale, then slowly recedes toward infinity.
Last Answer : Answer: B
Description : In acoustics, _____ is the apparent change in frequency or pitch when a sound source moves either toward or away from a listener. A. flanking B. reverberation C. Doppler effect D. echo
Last Answer : C. Doppler effect
Description : Recall homework 2 in which we calculated emissivity for a single layer atmosphere. If the atmosphere were to suddenly become a perfect emitter (i.e., if e = 1 rather than e = 0.8), ... . (d) There would be initial warming followed by cooling as the planet moves toward radiative equilibrium.
Last Answer : (c) The surface temperature would be higher.
Description : How is a negative charge created in a neutral body?
Last Answer : Through the accumulation of excess electrons.
Description : Assertion :- First electrons affinity fo all element is positive. Reason :- Successive electron affinity of all elements is negative
Last Answer : Assertion :- First electrons affinity fo all element is positive. Reason :- Successive electron affinity ... D. If both Assertion & Reason are false
Description : Who can help me with this problem Rank the following elements by electron affinity from most positive to most negative I have the elements Ar Cl O Sb and Rb?
Last Answer : The order is: O, Cl, Sb, Rb, Ar.
Description : In gram positive and gram negative bacteria the electron transport contains a. Naphthquinone b. Plastoquinone c. Ubiquinone d. Both a and b
Last Answer : Ans: A
Description : The electron affinity for the inert gases is (a) Zero (b) High (c) Negative (d) Positive
Last Answer : Ans:(a)
Description : The total energy of revolving electron in an atom – (1) cannot be negative (2) can have any value above zero (3) can never be positive (4) will always be positive
Last Answer : (3) can never be positive Explanation: The total energy of a revolving electron in any orbit is the sum of its kinetic and potential energies. Energy of an electron at infinite distance from the ... and the energy of electron decreases and thus becomes negative. Thus, it can never be positive.
Description : Would you expect the second electron gain enthalpy of O as positive, more negative or less negative than the first? Justify your answer.
Last Answer : Ans. Second electron affinity of O is largely +ve because of repulsion between negatively charged ions and second electron to be added. Energy required to overcome repulsion is more than the energy released in gaining electron, so net energy is absorbed.
Description : The total energy of revolving electron in an atom (1) cannot be negative (2) can have any value above zero (3) can never be positive (4) will always be positive
Last Answer : can never be positive
Description : Is electron flow out from the positive or negative terminal of the voltage source?
Last Answer : Electrons flow from negative terminal of battery which is the area of higher density electrons to positive terminal of battery which is the area of lower density of electrons.
Description : The constant-speed electrons of an electron bunch in a reflex klystron must remain in the repeller field for what minimum time?
Last Answer : Three-quarter cycle.
Description : When an electron is moving horizontally between oppositely charged plates, it will move in the A. straight line B. fall directly downwards C. move towards positive plates D. curved path
Last Answer : curved path
Description : If a voltage (positive or negative) is measured on the "1" output of a flip-flop, what state is it in?
Last Answer : SET state.
Description : What type of bias (positive or negative) is added to a negative damper for the most positive extremity of the wave shape to be clamped above 0 volts?
Last Answer : Positive bias.