Electromagnetic induction introduction to electromagnetic induction activity 3

Activity No # 3 - Electromagnetic Induction using Galvanometer

Estimated Time

20 minutes

Materials/ Resources needed

1. A strong bar magnet
2. Copper coil with 500 turns
3. Galvanometer

Process (How to do the activity)

Show the connection of copper coil and galvanometer. Show the electromagnetic induction using galvanometer and copper coil. Observe the changes of galvanometer deflections.

Evaluation (Questions for assessment of the child)

1.The device that detects the induced emf is called _________________ mark 1

2.Which the following emf is produced? Yes/no
a) Coil is steady, magnet is moved inside the coil _______________
b) Coil and magnet are moved away in opposite direction _______________
c) Magnet is steady, Coil is moved towards magnet ____________
d) Coil and magnet both are moved together __________________ mark 2

3.copper coil is connected to Galvanometer and a bar magnet. What are the changes in the following

• Magnet kept inside the coil ____________________________
  
• Magnet is pushed slowly ________________________________
  
• Magnet is pushed inside the coil very quickly _____________________ mark 2
  

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