Question 140: AC fundamentals

Question

A series LCR circuit is subjected to an ac signal of $$200 \mathrm{~V}, 50 \mathrm{~Hz}$$. If the voltage across the inductor $$(\mathrm{L}=10 \mathrm{~mH})$$ is $$31.4 \mathrm{~V}$$, then the current in this circuit is _______.

Accepted Answer

$$\begin{aligned}
&V_L=I(\omega L)=31.4\
&\begin{aligned}
\Rightarrow \quad I & =\frac{31.4}{2 	imes 3.14 	imes 50 	imes 10 	imes 10^{-3}} \
& =10 \mathrm{~A}
\end{aligned}
\end{aligned}$$

Answer

10 A

Answer

10 mA

Answer

68 A

Answer

63 A

AC fundamentals

A series LCR circuit is subjected to an ac signal of $200 \mathrm{~V}, 50 \mathrm{~Hz}. If the voltage across the inductor (\mathrm{L}=10 \mathrm{~mH}) is 31.4 \mathrm{~V}$, then the current in this circuit is _______.

Choose the correct answer: