A) The presence of a large magnetic flux through a coil maintains a current in the coil if the circuit is continuous.
B) A coil of a metal wire kept stationary in a non-uniform magnetic field has an e.m.f induced in it.
C) A charged particle enters a region of uniform magnetic field at an angle of \[85{}^\circ \] to the magnetic lines of force, the path of the particle is a circle.
D) There is no change in the energy of a charged particle moving in a magnetic field although a magnetic force is acting on it.
Correct Answer: D
Solution :
[d] When charged particle enters perpendicularly in a magnetic field, it moves in a circular path with a constant speed. Hence its kinetic energy also remains constant.
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