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Standard X

Physics

Ohm's Law

Assertion :In...

Question

Assertion :In the circuit shown in figure, current in wire $a b$ will become zero as soon as switch is opened. Reason: A resistance does not oppose increase or decrease of current through it.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
Reason is correct. A resistance does not oppose increase or decrease of current through it. However an inductor is a current storing device.
As soon as switch is opened, current stored in the inductor tends to dissipate into the circuit, through the wire ab.

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Assertion :In the circuit shown in figure, current in wire ab will become zero as soon as switch is opened. Reason: A resistance does not oppose increase or decrease of current through it.

Assertion :In the circuit shown in figure, current in wire $a b$ will become zero as soon as switch is opened. Reason: A resistance does not oppose increase or decrease of current through it.