Question

மின்காந்தத் தூண்டலின்போது ஆற்றல் மாறாது என நிரூபி.

Answer 1

Answer:

It works both ways. Suppose the moving magnetic field of a moving electron induces a voltage in a nearby wire. If no current flows in the wire as a result then no energy is involved. If, however, current does flow then that represents energy. But that current creates its own magnetic field which opposes the field of the electron. It slows the electron, causing it to lose the same amount of energy that the wire gained. It also opposes the current, which is important. If it didn’t, the voltage would have nothing to push against.