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Electromagnetic induction introduction to electromagnetic induction activity 2 (view source)
Revision as of 03:14, 26 August 2014
, 03:14, 26 August 2014→Evaluation (Questions for assessment of the child)
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=Activity No #2 - '''Electromagnet Experiment'''=
=Activity No #2 - '''Electromagnet and electromagnetic induction experiment'''=
==Estimated Time==
==Estimated Time==
45 minutes
==Materials/ Resources needed==
==Materials/ Resources needed==
[[File:electromagnet.gif|400px]]<br>
[[File:electromagnet.gif|400px]]<br>
Now you have an ELECTROMAGNET! Put the point of the nail near the pins or iron feeling and it should pick them up.
Now you have an ELECTROMAGNET! Put the point of the nail near the pins or iron feeling and it should pick them up.
Show the connection of copper coil and galvanometer. Show the electromagnetic induction using galvanometer and copper coil. Observe the changes of galvanometer deflections.
==Developmental Questions (What discussion questions)==
==Developmental Questions (What discussion questions)==
#How does iron nail become magnet?
#How does iron nail become magnet?
#Can it reverse to get electricity from the magnet?
#Can it reverse to get electricity from the magnet?
#What are the instruments to check current?
#Inside the copper coil, I kept the bar magnet. Is current produced ends of the copper wire?
#I remove the magnet from the coil Quickly, what do you observe in Galvanometer?
==Evaluation (Questions for assessment of the child)==
==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 <br>
a) Coil is steady, magnet is moved inside the coil _______________ <br>
b) Coil and magnet are moved away in opposite direction _______________ <br>
c) Magnet is steady, Coil is moved towards magnet ____________ <br>
d) Coil and magnet both are moved together __________________ mark 2 <br>
3.copper coil is connected to Galvanometer and a bar magnet. What are the changes in the following
* Magnet kept inside the coil ____________________________ <br>
* Magnet is pushed slowly ________________________________ <br>
* Magnet is pushed inside the coil very quickly _____________________ mark 2 <br>
==Question Corner==
==Question Corner==
'''To link back to the topic page'''
'''To link back to the topic page'''
[[Electromagnetic_induction|'''Go Back''']] <br>
[[Electromagnetic_induction|'''Go Back''']] <br>