State important characteristics of magnetic force experienced by charge moving in a magnetic field (or a current-carrying conductor placed in a magnetic field).

Explanation

Important characteristics of magnetic force are as given below:
(i) Magnetic force acts only on moving charges (or flowing current) and does not act on stationary charges.
(ii) Force acts on moving charge when its motion is not parallel to the direction of magnetic field. Similarly, magnetic force acts when current-carrying conductor is in any direction other than the direction of magnetic field.
(iii) Magnitude of magnetic force is maximum when current-carrying conductor is set perpendicular to magnetic field or when charge is moving at right angle to magnetic field.
(iv) The direction of force F is given by Fleming.s left-hand rule.
(v) The magnitude of magnetic force depends upon (a) the amount of current I, (b) the magnetic field B, and (c) the length of the conductor I. On increasing anyone or all of these factors force increases proportionately.