what is electromagnet induction? describe an experiment to demonstrate it?
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When the north pole of the magnet is pushed towards the coil, the pointer in the galvanometer deflects indicating the presence of an electric current in the coil. ... This induces an electromotive force in the coil. This induced emf causes the electric current to flow in the coil and through the galvanometer.
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Electromagnetic induction is the production of an electromotive force across a conductor when it is exposed to a varying magnetic field.
Experiment:
Two different coils of copper wire having large number of turns (say 50 and 100 turns respectively) are taken. They are now inserted over a non-conducting cylindrical roll, as shown in figure below.
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