Assertion :The energy of a charged particle moving in a uniform magnetic field does not change. Reason: Work done by magnetic field on the charge is zero.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$\to F \cdot \to v = 0$
No power is delivered i.e work done is zero.
Hence, KE does not change.

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Similar questions

Assertion: A proton and an $α$ - particle are projected with the same kinetic energy at right angle to a uniform magnetic field, then the $α$ - particle will move along a circular path of smaller radius than the proton.

Reason : $B q v = \frac{m v^{2}}{r}$ holds good for the charged particle moving in a circular path in a uniform magnetic field.

Choose the most appropriate correct option:

Q. Assertion: The compressibility factor for

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(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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Assertion :The energy of a charged particle moving in a uniform magnetic field does not change. Reason: Work done by magnetic field on the charge is zero.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion→F⋅→v=0No power is delivered i.e work done is zero. Hence, KE does not change.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$\to F \cdot \to v = 0$
No power is delivered i.e work done is zero.
Hence, KE does not change.