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(a) A monoenergetic electron beam with e...

(a) A monoenergetic electron beam with electron speed of `5.20xx10^(6)ms^(-1)` is subjected to a magnetic field of `1.30xx10^(-4)T`, normal to the beam velocity. What is the radius of the circle traced by the beam, given `e//m` for electron equal `1.76xx10^(11)C.kg^(-1)`.
(b) Is the formula you employ in (a) valid for calculating radius of the path of 20 MeV electrons beam? If not, in what way is it modified!

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