Question

When is an emf induced as a magnet moves towards or away from a coil?

पर्याय

• During the motion, when the magnetic flux through the coil changes

• Only after the magnet stops moving

• Only when the magnetic flux remains constant

• Only when the coil has infinite resistance

Answer 1

Either approach or withdrawal changes the magnetic flux through the coil. In both cases, an emf is induced during the motion.