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What is φ in terms of voltage?(a) φ=cos^-1V/VR(b) φ=cos^-1V*VR(c) φ=cos^-1VR/V(d) φ=tan^-1V/VR

Answer» Right choice is (c) φ=cos^-1VR/V

Easiest explanation: From the voltage triangle, we get cosφ= VR/V.

Hence φ=cos^-1VR/V.


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