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Simple Electric Circuit

The diagram b...

Question

The diagram below shows two filament bulbs connected in series. The resistance of bulb A is twice that of bulb B.
Describe and explain the relative brightness of bulb A and bulb B.

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Solution

The diagram below shows two filament bulbs connected in series. The resistance of bulb A is twice that of bulb B.
Power $P = I^{2} R$ .
The double resistance defines half the power Therefore it glows brither than other bulb.

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