Changes
From Karnataka Open Educational Resources
1,193 bytes added
, 03:14, 26 August 2014
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| __FORCETOC__ | | __FORCETOC__ |
− | =Activity No #2 - '''Electromagnet Experiment'''= | + | =Activity No #2 - '''Electromagnet and electromagnetic induction experiment'''= |
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| ==Estimated Time== | | ==Estimated Time== |
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| [[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. |
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| + | Show the connection of copper coil and galvanometer. Show the electromagnetic induction using galvanometer and copper coil. Observe the changes of galvanometer deflections. |
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| ==Developmental Questions (What discussion questions)== | | ==Developmental Questions (What discussion questions)== |
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| #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? |
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| ==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 |
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| + | 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> |
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| + | 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> |
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| ==Question Corner== | | ==Question Corner== |
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| '''To link back to the topic page''' | | '''To link back to the topic page''' |
| [[Electromagnetic_induction|'''Go Back''']] <br> | | [[Electromagnetic_induction|'''Go Back''']] <br> |