Suppose a charged particle of charge moves through a distance
PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
Suppose a charged particle of charge q moves through a distance l , with a speed v , in a direction that is perpendicular to a uniform magnetic field of strength B .
(1) What will the time it takes for the particle to travel the distance l be?
(2) What is the current caused by the moving charged particle?
(3) Since this current occurs over a length l , show that the force on the moving charged particle in the magnetic field is given by F=Bqv .
(4) Now suppose that the charged particle moves at an angle, θ , to the magnetic field. How will the equation for the magnetic force it experiences differ from that given in part c?