A stationary proton is in a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the proton? A) zero B) 1.6 × 10^-20 N C) 3.2 × 10^-20 N D) 1.6 × 10^-21 N E) 3.2 × 10^-21 N

Question

Quizplus · Accepted Answer

The magnetic force on a stationary charge in a magnetic field is zero. The formula for magnetic force is F = qvBsinθ, where q is the charge, v is the velocity, B is the magnetic field, and θ is the angle between the velocity and the magnetic field. Since the proton is stationary (v = 0), the magnetic force on it is zero.

A Stationary Proton Is in a Uniform Magnetic Field of 0.20