Assertion: The energy of charged particle moving in a uniform magnetic field does not change. Reason: Work done by magnetic field on the charge is zero.

Question

Assertion: The energy of charged particle moving in a uniform magnetic field does not change. Reason: Work done by magnetic field on the charge is zero. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

The force on a charged particle moving in a uniform magnctic field always acts in direction perpendicular to the direction of motion of the charge. As work done by magnetic field on the charge is zero. [H=1: S cos θ], so the energy of the charged particle does not change.

Q. Assertion : The energy of charged particle moving in a uniform magnetic field does not change.
Reason : Work done by magnetic field on the charge is zero.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

The force on a charged particle moving in a uniform magnctic field always acts in direction perpendicular to the direction of motion of the charge. As work done by magnetic field on the charge is zero. $[H = 1 : S cos θ]$ , so the energy of the charged particle does not change.

Q. Assertion : The energy of charged particle moving in a uniform magnetic field does not change. Reason : Work done by magnetic field on the charge is zero.