Assertion :Power of a magnetic force on a charged particle is always zero. Reason: Power of electric force on charged particle can't be 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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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
$_{m} = q (\to v \times \to B)$
$_{m} ⊥ \to v$ (always)
and $P = \to F \cdot \to v$
$∴$ Power of magnetic force is always zero.
$_{e} = q \to E$
If $_{e}$ is also perpendicular to $\to v$ ,then its power is also zero.

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Assertion :Power of a magnetic force on a charged particle is always zero. Reason: Power of electric force on charged particle can't be zero

The correct option is C Assertion is correct but Reason is incorrect→Fm=q(→v×→B) →Fm⊥→v (always)and P=→F⋅→v∴ Power of magnetic force is always zero. →Fe=q→EIf →Fe is also perpendicular to →v,then its power is also zero.

The correct option is C Assertion is correct but Reason is incorrect
$_{m} = q (\to v \times \to B)$
$_{m} ⊥ \to v$ (always)
and $P = \to F \cdot \to v$
$∴$ Power of magnetic force is always zero.
$_{e} = q \to E$
If $_{e}$ is also perpendicular to $\to v$ ,then its power is also zero.