Disperson of white light is the ability of white light to

A newly charged 12V accumulator can easily start a car whereas eight new dry cells in series with a effective e.m.f. of 12V cannot start the same car because

The fuse in an electric device is always connected to the

A particle carrying a charge of 1. 0 x 10^-8C enters a magnetic field at 3.0x 10^-2 ms ^-1 at right angles to the field. If the force on this particle is 1.8 x 10^-8N, what is the magnitude of the field?

The current output from of an a.c. source is given as I = 10 sin to t. The d.c equivalent of the current is