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Standard VIII

Physics

Current

A particle of...

Question

A particle of charge $q$ and mass $m$ moves in a circular path of radius $r$ in a uniform magnetic field $B$ at a speed $v$ .
The particle is replaced with a particle of mass $m$ and charge $2 q$ .
The radius of the new circular path the particle makes is:

\frac{1}{4} r

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\frac{1}{2} r

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r

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2 r

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4 r

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Solution

The correct option is B $\frac{1}{2} r$
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A particle of charge q and mass m moves in a circular path of radius r in a uniform magnetic field B at a speed v.The particle is replaced with a particle of mass m and charge 2q.The radius of the new circular path the particle makes is:

The correct option is B 12rundefined

A particle of charge $q$ and mass $m$ moves in a circular path of radius $r$ in a uniform magnetic field $B$ at a speed $v$ .
The particle is replaced with a particle of mass $m$ and charge $2 q$ .
The radius of the new circular path the particle makes is:

The correct option is B $\frac{1}{2} r$
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