(D) An inductor in a $d.c.$ circuit behaves as an open circuit at $t = 0$ (infinite resistance) and as a short circuit at steady state ($t \to \infty$

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If both the Assertion and Reason are incorrect.

(D) An inductor in a $d.c.$ circuit behaves as an open circuit at $t = 0$ (infinite resistance) and as a short circuit at steady state ($t \to \infty$,zero resistance).Since the resistance changes from infinity to zero,the assertion that it is 'always constant' is incorrect.In a steady state,an ideal inductor has zero resistance,so the statement that it is 'non-zero' is also incorrect.Therefore,both the Assertion and the Reason are incorrect.

Class 12 Physics Electromagnetic Induction R-L D.C. Circuit

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Assertion : The resistance offered by an inductor in a $d.c.$ circuit is always constant.
Reason : The resistance of an inductor in a steady state is non-zero.

AIIMS 2010 All AIIMS

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

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Assertion : The resistance offered by an inductor in a $d.c.$ circuit is always constant.Reason : The resistance of an inductor in a steady state is non-zero.

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$A$ series $L-R$ circuit is connected to a battery of emf $V$. If the circuit is switched on at $t = 0$,then the time at which the energy stored in the inductor reaches $\left(\frac{1}{n}\right)$ times of its maximum value,is

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Assertion : The resistance offered by an inductor in a $d.c.$ circuit is always constant.
Reason : The resistance of an inductor in a steady state is non-zero.