- #1
physics120
- 34
- 0
Homework Statement
A proton has a velocity of 1.0 * 10^2 m/s in the x direction + 2.0*10^2 m/s in the y direction and is located in the z=0 plane at x=3.0m, y=4.0m at some time t=T. Find the magnetic field in z=0 plane at x=2.0m, y=4.0m.
Homework Equations
magnetic field is given by: B= (mu/4pi)(qv*R/r^2)
where mu= magnetic constant= 4pi*10^-7 N/A^2
pi= pie= 3.14
q= charge
v= velocity
R= unit vector that points to the field point P from the charge q
The Attempt at a Solution
I don't understand how to do this question, since we are not given charge! Also, we can't use the biot-savart law, dB= (mu/4pi)(I dl*R/r^2) since we do not have current given either (I).
Please help, and in detail so I can understand, preferably by tomorrow since its due then. Thank-you