A proton enters a uniform magnetic field with its velocity making an angle of with…
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A proton enters a uniform magnetic field with its velocity making an angle of 30∘ with the field direction. Which one of the following statements about the magnetic force acting on the proton is correct?
(a) It is along the magnetic field
(b) It is perpendicular to the magnetic field but not to the velocity
(c) It is perpendicular to both the velocity and the magnetic field
(d) It is zero because the velocity has a component parallel to the magnetic field