JEE PYQ: Alternating Current Question 5
Question 5 - 2021 (17 Mar Shift 2)
What happens to the inductive reactance and the current in a purely inductive circuit if the frequency is halved?
(a) Both, inductive reactance and current will be halved. (b) Inductive reactance will be halved and current will be doubled. (c) Inductive reactance will be doubled and current will be halved. (d) Both, inductive reactance and current will be doubled.
Show Answer
Answer: (b)
Solution
$X_L = \omega L$. If frequency is halved, $X_L$ is halved. Current $i = \frac{V_0}{\omega L}$, so current will be doubled.
BETA
