Question

Activity based on electromagnetic induction

Answer 1

Activity 1

1.    Take a coil of wire having many turns.

2.     Connect it to a sensitive galvanometer.

3.     Take a bar magnet and move the north pole of the magnet towards the coil.





Observation: you will observe that galvanometer will give a deflection in one direction (say left).


4.    Now move the north pole of the magnet away from the coil.


Observation: you will observe that galvanometer now give a deflection in opposite direction (now right)

Summary of the activity

POSITION OF THE MAGNET

DEFLECTION IN THE GALVANOMETER

Magnet at rest

No deflection in galvanometer
Magnet moves towards the coil
Deflection in galvanometer in one direction
Magnet is held stationary at same position (near the coil)
 No deflection in galvanometer

Magnet moves away from the coil

Deflection in galvanometer but in opposite direction
Magnet is held stationary at same position (away from the coil)
No deflection in galvanometer
Magnetic is held stationary inside the coil
 No deflection in galvanometer