Question

 Describe different ways to induce current in a coil of wire.

Answer 1

Different ways of inducing current in a wire: 

When a magnet is moved towards/away from the coil of wire connected to a galvanometer, a deflection in the galvanometer is observed due to induced current, change in magnetic field and relative motion between magnet and coil.   

   

Take a coil of wire and connect it to a power supply. Now, place another coil connected to a galvanometer near the first coil and switch on the power supply connected to the first coil. A deflection in the galvanometer is observed due to induced current and change in magnetic field generated by the first coil.