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An inductive circuit draws a power 550 W...

An inductive circuit draws a power 550 W from a 220V-50Hz source. The power factor of the circuit is 0.8. The current in the circuit lags behind the voltage. Show that a capacitor of about `(1)/(42 pi) xx10^(-2) F` will have to be commected in the circuit to bring its power factor to unity.

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