Question

A proton moves through a uniform magnetic field of magnitude 2.0 μT = 2.0

x 10^-6 T at a speed of 5.00 x 10^6 m/s.

(a) What is the magnitude of maximum

magnetic force it can experience?

(b) If the proton is replaced by an electron,

will it experience the same maximum force?

Answer 1

(a) What is the magnitude of maximum magnetic force it can experience?

$$F=qvB\\ =1.6\times 10^{-19}\times 5.00 \times10^6\times 2.0\times10^{-6}\\ =1.6\times 10^{-18}\rm \: N$$

(b) If the proton is replaced by an electron, will it experience the same maximum force?

The charge of an electron is the same as a proton, so the force will be the same.