[to be done in practical sheets]
Activity 1: TO STUDY FARADAY LAW OF ELECTROMAGNETIC INDUCTION
REQUIREMENT: Phet simulation
THEORY
[Write in details about Faraday law of electromagnetic induction in detalis with figure]
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PROCEDURE
[this is instruction for you, you should convert these instructions in to third person passive form]
1. Visit phet simulation website and open the Faraday's law simulation.
2. Observe the screen and find the different control icons to change the number of loops in the coil, to change the polarity of magnet etc.
3. Pick up the magnet and insert in the coil and observe the deflection in voltmeter ( check the voltmeter and field lines box).
4. Next change the polarity of the magnet and observe the change in direction of deflection in voltmeter.
5. Change the speed of movement of magnet and observe the difference in amount of voltage induced.
6. Repeat the observation for amount of voltage by inserting the coil with same speed in few turns and then coil of many turns.
OBSERVATION
Table 1: Observation of cause of electromagnetic induction
S.N | Action | Observation | Remarks |
1 | Magnet inserted in the coil | Field lines changes in the coil | Deflection occurs |
2 | Magnet kept at rest inside the coil | Field lines doesn't change | Deflection doesn't occurs |
3. | Magnet taken out from coil | ……………….. | ……………………. |
Result 1. ………………………………………………………………………………….
Table 2: Observation for direction of current induced
S.N | Action | Observation | Remarks |
1 | North pole of magnet inserted in coil | Deflection is in ........(right/left) side | Current in induced in one direction |
2 | South pole of magnet inserted in coil | Deflection is in ........ side | Deflection occurs in opposite direction |
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Result 2: Direction of induced current depends upon the direction of magnetic field.
Table 3: Observation for amount of current induced current with the speed of motion
S.N | Action | Observation | Remarks |
1 | Magnet moved slowly | Deflection is ......... unit | .........(more/less) current is induced |
2 | Magnet moved quickly | Deflection is .......unit | ........(more/less) current is induced |
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Result 3: Amount of current induced is directly proportional to ........................................
Table 4: Observation for amount of current induced current number of turns of coil
S.N | Action | Observation | Remarks |
1 | Magnet moved in coil of less turn | Deflection is ......... unit | .........(more/less) current is induced |
2 | Magnet moved in coil of more turns | Deflection is .......unit | ........(more/less) current is induced |
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Result 4: ........................................
CONCLUSION
The above experiment on simulation proves Faraday law of electomagnetic induction. Which can be concluded in following points:
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