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Question
Answer the following question.
Show that an ideal inductor does not dissipate power in an ac circuit.
Solution
Power = VIcos`phi`
For pure inductive circuit, the phase difference between current and voltage is `pi/2.`
∴ `phi = pi/2, cos phi = 0`
Therefore, zero power is dissipated. This current is sometimes referred to as watt-less current.
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