A proton of charge 1.6 x 1019C is projected into a uniform magnetic field of flux density with a constant speed of 1.6 x 106ms-1, calculate the magnitude of the force exerted on it by the field
-
A.
0.0N -
B.
2.0 x 10-21N -
C.
1.3 x 10-17N -
D.
5.1 x 10-14N -
E.
2.3 x 1013N
Correct Answer: Option C
Explanation
F = Bqv = 5.0 x 10-5 x 1.6 x 10-19 x 106
= 1.3 x 10-17