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AIPMT 2008 Physics and Chemistry Paper

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Question : 39

Total: 100

In an A.C. circuit the emf (e) and the current (i) at any instant are given respectively by :
$$ e=E0‌sin‌ω‌t
i=I0‌sin(ωt−φ)
The average power in the circuit over one cycle of A.C. is -

‌
E0I0
2
‌cos‌φ
E0I0
‌
E0I0
2
‌
E0I0
2
‌sin‌φ

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