A particle of mass \( M \) and charge \( Q \) moving with velocity ...

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A particle of mass \( M \) and charge \( Q \) moving with velocity
P \( \vec{v} \) describes a circular path of radius \( R \) when subjected

WV
to a uniform transverse magnetic field of induction \( B \).
The work done by the field when the particle completes one full circle is
(1) \( B Q \vee 2 \pi R \)
(2) \( \left(\frac{M v^{2}}{R}\right) 2 \pi R \)
(3) Zero
(4) BQ \( 2 \pi R \)
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