What happens when the switch is turned off in the adjoining figure which shows two bulbs B1 and B2, resistor R and an inductor L ?

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Both B1 and B2 die out promptly

Both B1 and B2 die with some delay

B1 dies out promptly but B2 with some delay

B2 dies out promptly but B1 with some delay

answer is B.

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Detailed Solution

Both B1 and B2 die with some delay as they are forming a close loop current will be same for them while decaying.

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