Question

Statement 1: Induced e.m.f. in an inductor may be non-zero, even if the current through it is zero.
Statement 2: For alternating sinusoidal current passing through an inductor, voltage across inductor and current are completely out of phase.

• A. Statement $-1$ is true, Statement $-2$ is false
• B. Statement $-1 $ is false, Statement $-2$ is true
• C. Statement $-1$ is true, Statement $-2$ is true and Statement $-2 $ is a correct explanation for Statement $-1.$
• D. Statement $-1 $ is true, Statement $-2 $ is true but Statement $-2$ is not a correct explanation for Statement $-1.$

Answer 1

Answer: (A)

Statement $-1$ is true, Statement $- 2$ is false.
When $A.C.$ passes an inductor voltage leads the current by $\frac{\pi}{2}$.
Since $V=-\frac{L d I}{d t}$
Even if $I$ is $0, \frac{d I}{d t}$ is not $0 .$