# Lorentz Force

1. Mar 8, 2007

### jst81161

Was wondering if anyone is familiar with lorenzt force? Here is the problems whatever help you can give that would be great thank you in advance. Does anyone know a good site to practice these types of problems
1. The problem statement, all variables and given/known data
An electron is moving initially in the +x direction in a magnetic field of 3.4 mT that is
pointing in the −z direction. The magnitude of the initial velocity is 5.3 × 105 m/s.
(a) Draw the x, y plane and in it the initial velocity, magnetic field, and Lorentz force.
(b) Calculate the Lorentz force.
(c) The electron motion describes a circular orbit, calculate the radius of this orbit, and
draw it in the graph.

2. Relevant equations

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Mar 8, 2007

### Mindscrape

What have you tried so far?

3. Mar 8, 2007

### turdferguson

Have you heard of the right hand rule?