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Q.

Is it true that bulb A will glow if the filament of bulb B is broken in the given figure?

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a

True

b

False

answer is B.

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Detailed Solution

The above statement is False.
The bulb will not glow if the circuit is not complete. The filament is both the glowing part of the bulb and the connecting part. It completes the internal circuit of the bulb.
If the filament of bulb B breaks, the circuit is not complete, and bulb A will not glow. If any of the components that complete the circuit is broken, the circuit will not work. The most significant condition is that the circuit be completed properly.
If another bulb is connected, it will not work either. [65]This is because a current has no complete path.
The correct statement would be, bulb A will glow if the filament of bulb B is in good condition.[66]

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Is it true that bulb A will glow if the filament of bulb B is broken in the given figure?