Question

For the circuit shown in the figure the current through the inductor is $1.6A$ , while the current through the condenser is $0.4A,$ then the current $l$ drawn from the source is :

• A. $2\sqrt{2}A$
• B. $1.65A$
• C. $1.2A$
• D. $2.0A$

Answer 1

The correct option is C $1.2A$

In capacitor current leads voltage by $90$ degree while in inductor current lags voltage by $90$ degrees. So thus inductor current lags the capacitor current by $180$ degrees.

Thus current drawn from the source is equal to difference of inductor current and capacitor current.

Thus current drawn from the source

$I=I_L-I_C$

$I=1.6-0.4$

$I=1.2A$

Thus current drawn from the source is $1.2A$.