A proton enters a uniform magnetic field of magnitude that is directed horizontally…
PHYSICS · Subjective · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism
Problem
A proton enters a uniform magnetic field of magnitude 0.40T that is directed horizontally from south to north. The proton is projected vertically upward with an initial speed of 3.0×106m s−1. Answer the following questions, showing all working wherever required:
(i) Calculate the magnitude of the magnetic force acting on the proton at the instant it enters the field.
(ii) Determine the initial direction of the proton’s acceleration with respect to the cardinal directions (east, west, north, south, up, down).
(iii) Find the radius of the circular path described by the proton.
(iv) How much time does the proton take to complete a semicircular path in the field?