NEET Physics Magnetic Force on Current MCQ Question
Which of the following statements about the magnetic force on a current-carrying wire is correct?
The magnetic force is always perpendicular to the direction of the current and the magnetic field.
The magnetic force can do work on the current-carrying wire, increasing its kinetic energy.
The direction of the magnetic force depends only on the magnitude of the current.
The magnetic force on a wire is independent of the angle between the wire and the magnetic field.
Correct Answer
Detailed Explanation
The magnetic force on a current-carrying wire is given by the equation F = IlB sin(θ), where F is perpendicular to both the current and the magnetic field, thus confirming option A is correct. Option B is incorrect as the magnetic force does not do work on the wire. Option C and D are also incorrect as the direction of the force depends on both the current's direction and the angle with the magnetic field.
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