What happens to the force acting on a current-carrying conductor placed in a magnetic field when : a] current in conductor increases ? b] length of the conductor increases ? c] direction of the current and magnetic field are reversed ? d] direction of the current is reversed without changing the direction of magnetic field ?

Explanation

a] Force on the conductor increases, as F `prop` l .
b] Force on the conductor increases, as F `prop` L.
c] Force on the conductor remains same, both in magnitude and direction.
d] The direction of force on the conductor is reversed.