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__.

may increase exponentially

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remain same

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increase

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decrease

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Solution

The correct option is D
decrease

Electric Power is the rate at which energy is dissipated or consumed in an electric circuit. $P = V I = \frac{V^{2}}{R}$

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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