Question

Assertion: The energy of charged particle moving in uniform magnetic field does not change.
Reason: Work done by magnetic field on the charge is zero.
A. (a) Statement I is True, Staatement II is True, Statement II is correct expaination for Statement I.
B. (b) Statement I is True, Staatement II is True, Statement II is NOT a correct expaination for Statement I.
C. ( c) statement I is True, Satement II is false.
D. ( d) statement I is False, Satement II is True.

Answer 1

Correct Answer - A
(a) The force on a charged particle moving in a uniform magnetic field always acts in directin perpendicular to the direction of motion of charge is zero, `W = FS cos theta`, so the energy of charged particle does not change.