Question

Hello I am studying for a test concerning magnetic fields and I can’t seem to solve these questions!

First question: Flow density at a point of distance A from a long straight conductor is 38?T. How big is the flow density at a point of distance 4A from the same conductor? Ignore the earths magnetic field

The seccond question: An electron comes at a speed of 4.5 Mm / s in perpendicular to a homogeneous magnetic field whose flow density is 32 ?T.

a) Calculate the force that affects the electron and indicate how it is directed.

b) Calculate the acceleration.

c) What is the radius of the penalty arc the electron describes in the magnetic field?

d) At what speed does the electron leave the magnetic field?

Answer 1