Question

find the radios of an orbit of an electio moving at a rate of 2.0×10 7 ms-1 in a uniform magnetic field of 1.20×10-3 T.​

Answer 1

Answer:

The electron will only move in circular orbit in uniform magnetic field when centripetal force acting on it is equal to Force exerted on electron in magnetic field.

The equation will look like this

mv^2/r=evB (here q=e)

now r= mv^2/evB

now put m=9.1×10^-31 , e=1.6×10^-19, v and B values are given

now calculate r you will get the answer

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