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प्रश्न
When an AC source is connected to an ideal inductor show that the average power supplied by the source over a complete cycle is zero.
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उत्तर
The average power supplied by the source over a complete cycle is given as
P = VIcosϕ
where cosϕ is called the power factor.
For pure inductive circuit, the phase difference between current and voltage is `pi/2`
`=>cosphi=cos""pi/2=0`
Therefore, the average power dissipated is zero.
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