# Physics

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An electron that has velocity v = (3 x 105 m/s) and moves along positive x direction through the uniform magnetic field B = (0.8T) which is along the positive z direction.
a. Find the force on the electron (magnitude and direction).
(e = - 1.6 x 10-19 C, m=9.1 x10-31 kg)
b. Calculate the radius of electron’s path in the magnetic field.

• Physics -

(a) F = -e V B
Use the right hand rule for direction

(b) Review the formula for the "Larmor radius" of a charge in a magnetic field.

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