DFE 1052 TUTORIAL 3

1.   A 0.32-mC particle moves with a speed of 16 m/s through a region where the magnetic field has strength of 0.95 T.  At what angle to the field is the particle moving if the force exerted on it is

a)  4.8 x 10^-6 N

b)  3.0 x 10^-6 N

c)  1.0 x 10^-7 N

Solution:

q = 0.32μC        v = 16m/s         B = 0.95T         θ = ?

 

2.   An electron moving with a speed of 9.1 x 10⁵ m/s in the positive x direction experiences a zero magnetic force.  When it moves in the positive y direction, it experiences a force of 2.0 x 10^-13 N that points in the negative z direction.  What is the direction and magnitude of the magnetic field?

Solution:

 

3.    A particle with a charge of 14 mC experiences a force of 2.2 x 10^-4 N when it moves at right angles to a magnetic field with a speed of 27 m/s.  What force does this particle experience when it moves at the speed of 6.3 m/s at an angle of 25⁰ relative to the magnetic field?

 

Solution:

4.  An electron moving in the positive x direction, at right angles to a magnetic field, experiences a magnetic force in the positive y direction.  What is the direction of the magnetic field?

 Solution: