Assertion :A direct current flows through a metallic rod, producing magnetic field both inside and outside the rod. Reason: There is no flow of charge carriers inside the rod.

Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

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Both Assertion and Reason are correct, but Reason is not the correct explanation of 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 C Assertion is correct but Reason is incorrect.
Answer is C.
The electric current is defined to be the rate at which charges flow across any cross-sectional area. In the case of metallic rod, the charge carries flow through whole of the cross section. Therefore, the magnetic field exists both inside as well as outside.
However magnetic field inside the rod will go no decreasing as we go towards the axis.
Hence, the assertion is correct but the reason is incorrect.

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Similar questions

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