Question

conductor
30. Show that the efficiency of s battery when delivering maximum power is only 50%
Section - C
31 Show that the work done by a magnetic field on a moving charged particle is always zero.​

Answer 1

Answer:

0

Explanation:

31.The magnetic force acts in such a way that the direction of the magnetic force and velocity are always perpendicular to each other. If force and velocity are perpendicular force and displacement are also perpendicular, thus W= FS cos q, if q = 90, work done will be zero.