No links please - Physics - Alternating Current

Question

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Short Questions

â€‹Q14 In an ac circuit, emf, E = E0
cos ω t and current, I = I0 cos
(â€‹ ω t – θ ) Show that, power
dissipation in the circult = 1 2 E 0 I 0 cos â€‹
θ

Sandeep K. Gupta · Accepted Answer

Dear Student,

Given - E=E0 cos ωt  and I=I0 cos ωt-θBecause average power loss for one cycle is given byP=ErmsIrms cosφHere , Erms=E02  ,  Irms=I02 and φ=θHence ,  P=E02I02 cosθP=12E0 I0 cosθ

Regards

No links please Short Questions ​Q14. In an ac circuit, emf, E = E0 cos ω t and current, I = I0 cos (​ ω t – θ ). Show that, power dissipation in the circult = 1 2 E 0 I 0 cos ​ θ .

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Short Questions

Q14. In an ac circuit, emf, E = E₀ cos $ω$ t and current, I = I₀ cos ( $ω$ t – $θ$ ). Show that, power dissipation in the circult = $\frac{1}{2} E_{0} I_{0}$ cos $θ$ .