In an a.c. circuit, the e.m.f (\epsilon) and the current (i) at any instant are given respectively by \epsilon=E_0sin\omegat,i=I_0sin(\omegat-ϕ) The average power in the circuit over one cycle of a.c. is (2008)

Class 12 NEET Physics Electromagnetic Induction and Alternating Currents

Question : 74 of 116

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In an a.c. circuit, the e.m.f (ε) and the current (i) at any instant are given respectively by
ε=E0sinωt,i=I0sin(ωt−ϕ)
The average power in the circuit over one cycle of a.c. is

(2008)

E0I0
2
cosϕ
E0I0
E0I0
2
E0I0
2
sinϕ

Validate

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