In an a.c. circuit the e.m.f. ($\varepsilon $) and the current (i) at any instant are given respectively by $\varepsilon $ = E0sin$\omega $t, $i$ = $I$0sin($\omega $t $-$ $\phi $) The average power in the circuit over one cycle of a.c. is

Question

In an a.c. circuit the e.m.f. ($\varepsilon $) and the current

(i) at any instant are given respectively by
$\varepsilon $ = E₀sin$\omega $t, $i$ = $I$₀sin($\omega $t $-$ $\phi $)

The average power in the circuit over one cycle of a.c. is

${{{E_0}{I_0}} \over 2}\cos \phi $

${{E_0}{I_0}}$

${{{E_0}{I_0}} \over 2}$

${{{E_0}{I_0}} \over 2}\sin \phi $

Solution

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