Heat energy is being produced in a resistance in a circuit at the rate – InterviewSolution

1.

Heat energy is being produced in a resistance in a circuit at the rate of 100 W. The current of 3 A is flowing in the circuit. What must be the value of the resistance?

Answer»

Data: P = 100 W, I = 3 A, R = ?, P = I²R

∴ Resistance, R = \(\frac{P}{I^2}=\frac{100W}{(3A)^2}=\frac{100}{9}\Omega\) = 11.11 Ω

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