Q/m of a particle in a straight line.

[zyphriss2]

What is the value of q/m for a particle that moves in a circle of radius 6.2 mm in a 0.56 T magnetic field if a crossed 220 V/m electric field will make the path straight?



q/m=2v/(br)^2
This was given to us in our lab and i plugged everything in and it doesn't turn out right.


q/m=2(220v/m)/((.56T)(.0062m))^2
q/m=(440v/m)/.000012055=36499377

 

[tiny-tim]

What is the value of q/m for a particle that moves in a circle of radius 6.2 mm in a 0.56 T magnetic field if a crossed 220 V/m electric field will make the path straight?
…
q/m=2v/(br)^2
This was given to us in our lab

Hi zyphriss2!

That formula doesn't look right to me …

have you tried finding the formula from scratch?