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E5D11
How much real power is consumed in a circuit consisting of a 100-ohm resistor in series with a 100-ohm inductive reactance drawing 1 ampere?
Pick an answer to check it.
Answer: B. 100 watts
Only the resistor consumes real power; the inductor's reactive power is returned to the circuit. P = I^2 x R = 1^2 x 100 = 100 W.
Tip: Real power: only resistance counts.