The line of force in a magnetic field represents the direction at each point that a magnetic needle placed at the point takes up. Do they also represent the direction of the force on a moving charge at each point?

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Represent circular motion

Not possible

Represents translatory motion

Represent tangential motion

answer is A.

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Detailed Solution

No. The force on a charge is perpendicular to the direction of the magnetic field at each point.
F = q (v × B).
It is inappropriate to call magnetic field lines as lines of force.

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