Which of the following statement is true - Vidyadip

MCQ

Which of the following statement is true

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
✓
There is no change in the energy of a charged particle moving in a magnetic field although a magnetic force is acting on it

✓

Answer

Correct option: 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

d
(d) When charged particle enters perpendicularly in a magnetic field, it moves on a circular path with a constant speed. Hence it’s kinetic energy also remains constant.

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