A positive particle has an initial velocity component along +B while a uniform electric field points along -B. Its perpendicular velocity is non-zero. Which statements are correct?
Select all that apply

Question

A positive particle has an initial velocity component along +B while a uniform electric field points along −B. Its perpendicular velocity is non-zero. Which statements are correct?

G1 Physics · Accepted Answer

The electric field changes only v∥. The perpendicular speed and hence the cyclotron radius remain constant.