A current carrying conductor placed in a magnetic field experiences a force which means that a moving charge in a magnetic field experiences force.

Special Cases:

i) If the charge is at rest, i.e. v = 0, then Fm = 0. So, a stationary charge in a magnetic field does

not experience any force.

ii) If θ = 0°or 180°i.e. if the charge moves parallel or anti-parallel to the direction of the magnetic

field, then Fm = 0.

iii) If θ = 90°i.e. if the charge moves perpendicular to the magnetic field, then the force is

maximum. Fm (max) = q v B

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