A charge moving with velocity v in X -direction is subjected to a field of magnetic induction in negative X -direction. As a result, the charge will (a) remain unaffected (b) start moving in a circular path Y-Z plane (c) retard along X -axis (d) moving along a helical path around X -axis

Answer: (a). v along +x and B along -x: θ = 180°. F = qvBsin 180° = 0, so the motion is unchanged. So the answer is (a) remain unaffected.

A charge moving with velocity v in X -direction is subjected to a… | NEET 1993 (AIPMT)

Q132NEET 1993 · AIPMTEasy

Moving Charge in a Magnetic Field

A charge moving with velocity $v$ in $X$ -direction is subjected to a field of magnetic induction in negative $X$ -direction. As a result, the charge will

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Answer: (a)

$\vec{v}$ along $+x$ and $\vec{B}$ along $-x$ : $\theta = 180^\circ$ .
$F = qvB\sin 180^\circ = 0$ , so the motion is unchanged.
So the answer is (a) remain unaffected.

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Moving Charge in a Magnetic Field question from NEET 1993 (AIPMT)

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