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Homework Statement
"An electron is accelerated by a potential difference of 1 V and is injected into vacuum. How strong should the magnetic field in a vacuum be if you want the electron to circle along a loop with a radius of 10^-1m? Please indicate the direction of the magnetic field"
Homework Equations
PE = KE
for speed
F_centripetal =( mv^2) / r
for force
B = qv/F
for field strength
The Attempt at a Solution
v = sqrt(2qV/m)
v= 5.93 E5 m/s
F = 3.2 E-18 Newtons
B = 3 E4 Tesla