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A coil of insulated wire is connected to a torc bulb. State the likely response of the bulb , if the bar magnet is - 1)pushed into the coil? 2)pulled out of the coil? 3)held stationary with in the coil?

Posted by Sarika Yadav 5 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Gaurav Seth 5 years, 7 months ago

(i) when magnet is pushed near a bar magnet then it induces current due to electromagnetic induction.
(ii) When the bar magnet is withdrawn from inside the coil of the insulated copper wire again the current is induced in the coil but this time it is in reverse direction.
(iii) When a bar magnet is held stationary inside the coil then no current is induced that’s why galvanometer will show no deflection.

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