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What is the value of power if the circui...

What is the value of power if the circuit is (i) purely resistive (ii) Purely inductive or capactive.

Text Solution

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i. For a purely resistive circuit, the phase angle between voltage and current is zero and `cosPhi=1.`
`thereforeP_(av)=V_(RMS)I_(RMS)`
ii. For a purely inductive or capacitive circuit, the phase angle is `pm(pi)/(2)andcos(pm(pi)/(2))thereforeP_(av)=0.`
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