An AC generator of $220\,\,V$ having internal resistance $r = 10\,\,{\rm{\Omega }}$ and external resistance $R = 100\,\,{\rm{\Omega }}$. What is the power developed in the external circuit

NEET UG PHYSICS MCQ: CURRENT ELECTRICITY

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An AC generator of

220\,\,V

having internal resistance

r = 10\,\,\mathrm{\Omega }

and external resistance

R = 100\,\,\mathrm{\Omega }

. What is the power developed in the external circuit

View answer and explanation

Correct option: B

400\,\,W

Option B (400 W) is correct because it is the power calculated using the voltage across the external resistor and its resistance, considering the total resistance in the circuit.

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