Question 369: AC fundamentals

Question

In the circuit given below, the current through inductor is $$0.9 \mathrm{~A}$$ and through the capacitor is $$0.6 \mathrm{~A}$$. The current drawn from the a.c. source is

Accepted Answer

As the currents in an inductor and capacitor are out of phase by $$180^{\circ}$$, we can write
Current through the capacitor $$\mathrm{I}_{\mathrm{C}}=0.9 \mathrm{~A}$$
Current through the inductor $$\mathrm{I}_{\mathrm{L}}=-(0.6 \mathrm{~A})$$
$$\begin{aligned}
	herefore \quad 	ext { Total current drawn from the source } & =\mathrm{I}_{\mathrm{C}}+\mathrm{I}_{\mathrm{L}} \
& =0.9-0.6 \
& =0.3 \mathrm{~A}
\end{aligned}$$

Answer

1.5 A

Answer

0.9 A

Answer

0.6 A

Answer

0.3 A

AC fundamentals

In the circuit given below, the current through inductor is $0.9 \mathrm{~A} and through the capacitor is 0.6 \mathrm{~A}$. The current drawn from the a.c. source is

Choose the correct answer: