electromagnetic induction 0:03 prepare a circular coil out of copper 0:06 wire 0:07 connect the two ends of this coil to the 0:09 two terminals of a sensitive 0:11 galvanometer with the scale having zero 0:14 at the center 0:15 this closed circuit is shown in the 0:18 diagram 0:19 note that this circuit contains no 0:21 source of electricity and the galvan 0:23 meter shows zero reading initially 0:26 take a bar magnet and s and move it 0:29 swiftly towards the coil with its north 0:32 pole facing the coil 0:34 you will observe a deflection in the 0:36 galvanometer when the magnet is moving 0:39 the deflection indicates that current is 0:41 set up in the coil 0:43 now 0:44 move the magnet away from the coil 0:47 the galvanometer shows again a 0:49 deflection but in the opposite direction 0:52 this means current is set up in the 0:54 opposite direction 0:56 if you hold the magnet with its south 0:58 pole facing the coil and repeat the 1:00 above steps the deflections are again 1:03 observed but are reversed 1:05 similarly motion of the coil itself also 1:08 produces deflections in the galvanometer 1:11 when the magnet is kept stationary 1:15 do you observe any deflection when you 1:17 just hold the magnet stationary near the 1:19 coil at rest 1:21 no 1:22 a relative motion of a magnet and a coil 1:26 induces the current in the coil 1:28 the current produced by a relative 1:30 motion of the coil or the magnet is 1:33 called an induced current and is said to 1:36 be set up by an