A Proton Is Accelerated from Rest Through a Potential Difference

Multiple Choice

A proton is accelerated from rest through a potential difference of 2.5 kV and then moves perpendicularly through a uniform 0.60-T magnetic field. What is the radius of the resulting path?

A) 15 mm
B) 12 mm
C) 18 mm
D) 24 mm
E) 8.5 mm