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Circular Kinematics

An electron a...

Question

An electron and a proton having same linear momentum are moving in the uniform magnetic field $B$ along circular paths. Find the ratio of radii of their paths.

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Solution

As the radius of the charged particle in the magnetic field is $r = m v B q$
the ratio of their radii is $1$ , because $q$ , $m$ , $v$ and $B$ are equal
Answer : 1:1

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