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LESSON NOTES:

Electromagnetic Induction (EMI) : The production of electricity from magnetism is
called EMI.

We can produce current either by moving conducting wire inside a magnetic field or by
keeping wire fixed and changing magnetic field.

And yes and it was first showed by a british scientist Michael faraday in 1931 .

Experiment 1:

Activity 1 to Show Electromagnetic Induction with the help of Galvanometer

In this experiment, Faraday connected a coil to a galvanometer, as shown in the figure
above. A bar magnet was pushed towards the coil, such that the north-pole is pointing
towards the coil. As the bar magnet is shifted, the pointer in the galvanometer gets
deflected, thus indicating the presence of current in the coil under consideration. It is
observed that when the bar magnet is stationary, the pointer shows no deflection and
the motion lasts only till the magnet is in motion. Here, the direction of deflection of the
pointer depends upon the direction of motion of the bar magnet. Also, when the south-
pole of the bar magnet is moved towards or away from the coil, the deflections in the
galvanometer are opposite to that observed with the north-pole for similar movements.
Apart from this, the deflection of the pointer is larger or smaller depending upon the
speed with which it is pulled towards or away from the coil. The same effect is observed
when instead of the bar magnet, the coil is moved and the magnet is held stationary.
This shows that only the relative motion between the magnet and the coil is responsible
for the generation of current in the coil.

 We take a coil of wire (having large number of turns)
 We connect it to a galvanometer. ...
 We bring strong magnet near the wire.
 Slowly we start moving it towards one side of wire. ...
 Now we stop moving the magnet.

 Case 1