Answer to Question 1

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An electron accelerated to 6.0 106 m s-1 is deflected by a magnetic field of strength 0.82 T that is acting at 90o.  What is the force acting on the electron?  Would the force be any different for a proton?     

F = 0.82 T 1.6 10-19 C 6.0 106 m s-1 = 7.87 10-13 N = 7.9 10-13 N (2 s.f.)

 

The value of the force would be the same, but the direction would be the opposite.