Physics-Magnetic Force on Current
NEET Physics Magnetic Force on Current MCQ Question
Type: MCQ-numerical-Easy-Class 12
A straight rod of length 0.5 m carrying a current of 4 A is placed in a uniform magnetic field of 0.2 T. If the magnetic field is perpendicular to the rod, what is the magnitude of the magnetic force on the rod?
A
0.4 N
B
0.2 N
C
0.5 N
D
0.1 N
Correct Answer
Option A
Detailed Explanation
The magnetic force on a current-carrying conductor is given by F = I × l × B. Here, I = 4 A, l = 0.5 m, B = 0.2 T. Thus, F = 4 × 0.5 × 0.2 = 0.4 N.
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