JAMB - Physics (2000 - No. 34)
A conductor of length 2m carries a current of 0.8A while kept in a magnetic field of magnetic flux density 0.5T. The maximum force acting on it is
0.2N
0.8N
3.2N
8.0N
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The force on the conductor is maximum when the conductor lies perpendicular to the field during which the maximum force is given as;
F = ILB = 0.8 x 2 x 0.5 = 0.8N
F = ILB = 0.8 x 2 x 0.5 = 0.8N