Question

TRUE OR FALSE

a) When a charged particle moves under the influence of an arbitrary static (that is, time-independent) magnetic field, its kinetic energy will change. b) The amount of work done to move a positive point charge from the center of a charged solid conducting sphere to its surface is equal to zero. c) There will be no change in the charge on the inner surface of a hollow conducting sphere if an additional charge is placed at the center of the sphere. d) A steady magnetic flux through the circular conducting loop generates a vortex electric field in the loop. e) In an inductor, a self-induced emf is at its maximum when the current is at its maximum. f) in the R-C circuit (a resistor, capacitor and battery connected in series), a rate of capacitor charging is larger for larger resistance. g) A resonance frequency in the L-R-C circuit is w0. An additional capacitor is connected in series to the capacitor in the circuit. The resonant frequency decreases. h) The electric field vanishes (i.e. is equal to zero) anywhere inside a uniformly charged insulator. i) A negatively charged particle released from rest will begin to move to a region of a higher electrostatic potential. j) A spherical conducting ball of radius R carries a positive charge Q. It follows that the magnitude of the electric potential on the surface of the ball at r = R is the same as the magnitude of the electric potential at any point in the region r < R inside the ball. k) parallel-plate capacitor is connected to a battery. When a distance between the plates is decreased by a factor of 2, the amount of charge stored in the capacitor is decreased by the same factor. l) an electric charge moves in the magnetic field. A Lorentz force always does work on the moving charge.

Answer 1

a) False

b) True

c) False

d) False

e)False

f) False

g) False

h) False

i) True

j) True

k) True

l) True