A doubly ionised helium ion ( ) travels due north with speed through a region…
PHYSICS · Subjective · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism
Problem
A doubly ionised helium ion (q=+2e) travels due north with speed 4.5×105m s−1 through a region containing a uniform magnetic field of 0.15T directed vertically downward.
Determine the magnitude and direction of the uniform electric field that must be applied so that the ion passes through the region without deflection.