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Question
What is φ in terms of voltage?
Options:
A .  φ=cos¯¹V/VR
B .  φ=cos¯¹V*VR
C .  φ=cos¯¹VR/V
D .  φ=tan¯¹V/VR
Answer: Option C
Answer: (c).φ=cos¯¹VR/V
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