(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An electron is travelling at 5.0 × 106 m s−1 directly into the page at the point P shown in Figure 3. P is 4.0 cm from O. Again, D = 10 cm and the current i in each wire has magnitude of 1.0 A with the directions that you found in part (c). Find the magnitude and direction of the force that the electron experiences.

2. Relevant equations

F = q(E(r) + v x B(r) (The Lorentz law field equation)

E(r) = Q / 4πε r^2 (The electric field)

B(r) = μ i / 2π r (The magnetic field)

3. The attempt at a solution

I have i = 1.0A, v = 5.0E6 ms^-1, q = -1.6E-19 C. I do have an answer (but I'm not sure of two things:

(i) Should I be using the equation: F = q(E(r) + v x B(r)) ? or the more straight forward F = qvB(r)

(ii) Should I be looking at the resultant force from both conductors left and right.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Lorentz Law field equation applied in a field

**Physics Forums | Science Articles, Homework Help, Discussion**