Describe an act to show how a moving magnet may be used to generate an electric current 0
Answers
1. take a coil AB with large no of turns
2. connect a galvanometer to the coil
3.now to take a bar magnet
4. move it towards the coil from end B
5. the needle of the galvanometer deflects towards right side
6. the deflection becomes zero when there is no moment of the magnet
7. now move it away from the coil you will see the deflection is towards left
8. on reversing the poles the direction of deflection also changes
9. now keep the magnet stationary and move the coil such that north pole faces side B
10. you will once again observe deflection towards right. on moving the coil away from the magnet the deflection is towards left.
11. but when both are kept in stationary there is no deflection
CONCLUSION
the galvanometer is the device which detects presence of current. since there is deflection when the magnet or coil is in motion therefore we can conclude that a moving magnet may be used to generate electric current