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7.Alternating Current
medium
An inductive circuit contains resistance of $10\,\Omega $ and an inductance of $20\,H$ . If an $ac$ voltage of $120\,V$ and frequency $60\,Hz$ is applied to his circuit, the current would be nearly ................$Amp$
A
$0.32$
B
$0.16$
C
$0.48$
D
$0.80$
Solution
$Z=\sqrt{R^{2}+X_{L}^{2}}$
$=\sqrt{(10)^{2}+(2 \pi \times 60 \times 2)^{2}}=753.7$
$I=\frac{V}{Z}=\frac{120}{753.7}=0.159 A$
Standard 12
Physics
