Radius of curvature of 1 MeV electron in 1 Tesla B field

[tuathan]

i need to calculate radius of curvature of 1 MeV KE electron in 1 Tesla magnetic field.

r = mv / eB

what is the (relativistic) speed, v, of the electron? (ans: 0.941 c ??)

then i think you use p(rho) = mo. V / sqrt (1 - v^2 /c^2) = mv (ans: 7.59E-22 kg m/s)

e = 1.6E-19 C
B = 1

please show calculation of radius of curvature..

(expected value for r: 4.74E-03 m ??)

 

[hamster143]

Your answer seems to be correct.

http://en.wikipedia.org/wiki/Cyclotron#Mathematics_of_the_cyclotron