Physics-Magnetic Force on Current
NEET Physics Magnetic Force on Current MCQ Question
Type: MCQ-fact-Easy-Class 12
What is the formula for the magnetic force on a straight wire carrying a current perpendicular to a uniform magnetic field?
A
F = I B l
B
F = I B cos(θ)
C
F = B l sin(θ)
D
F = I l B^2
Correct Answer
Option A
Detailed Explanation
The magnetic force on a straight wire carrying a current perpendicular to a uniform magnetic field is given by the formula F = I B l, where I is the current, B is the magnetic field, and l is the length of the wire. This relates to the force exerted on the arms of a loop in a magnetic field as described in the context.
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