Question

15. For the circuit shown in the figure the current through the inductor is 1.6 A, while the current through the
condenser is 0.4 A, then the current / drawn from the source is
(2) 1.65 A

(1) 2√2A
(3) 1.2 A
(4) 2.0A
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Answer 1

answer : option (3) 1.2 A

we know, in a capacitor current, I_c leads voltage by 90° while in a inductor current, I_i lags voltage by 90° so thus inductor lags the capacitor current by 180° .

it means, inductor current is just opposite of capacitor current.

thus we can say that current of source is equal to difference of current through inductor and current through capacitor (condenser).

so, I = I_i - I_c

= 1.6A - 0.4A = 1.2A

hence, current drawn from the source is 1.2 A

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Answer 2

$\huge\bold\purple{Answer:-}$

(3) 1.2 A