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Question

In a series combination of electrical appliances, connected to a constant voltage power supply, if we add one more appliance with resistance R in series, then the total electrical power consumed in the circuit will__.


A

increase

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B

decrease

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C

may increase exponentially

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D

remain same

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Solution

The correct option is B

decrease


Electric Power is the rate at which energy is dissipated or consumed in an electric circuit. P=VI=V2R

Power is inversely proportional to resistance. In a series combination, total resistance increases, hence the power decreases.

In series combination of electrical appliances, total electrical power decreases.


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