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Physics · 2018
JEE Main 2018 · 2018-04-08 Offline · Q16
In an a.c. circuit, the instantaneous e.m.f. and current are given by e=100 sin 30 t; i=20 sin (30 t-(π)/4) In one cycle of a.c., the average power…
In an a.c. circuit, the instantaneous e.m.f. and current are given by
$$\begin{aligned}
& e=100 \sin 30 t \\
& i=20 \sin \left(30 t-\frac{\pi}{4}\right)
\end{aligned}
$$
In one cycle of a.c., the average power consumed by the circuit and the wattless current are, respectively :
Official answer
(2)
$\displaystyle \frac{1000}{\sqrt{2}}, 10$
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JEE Main 2018 Physics question, with the answer from NTA’s final answer key. Where our answers come from.