Questions in Moving Charges and Magnetism

Select	Question
	A circular loop of area $0.01{m^2}$ carrying a current of 10 A, is held perpendicular to a magnetic field of intensity 0.1T. The torque acting on the loop is
	Magnetic dipole moment of a rectangular loop is
	If m is magnetic moment and B is the magnetic field, then the torque is given by
	What is the net force on the square coil
	Two long parallel copper wires carry currents of 5A each in opposite directions. If the wires are separated by a distance of 0.5m, then the force between the two wires is
	In order to increase the sensitivity of a moving coil galvanometer, one should decrease
	A circular loop has a radius of 5 cm and it is carrying a current of 0.1 amp. Its magnetic moment is
	Due to the flow of current in a circular loop of radius R, the magnetic induction produced at the centre of the loop is B. The magnetic moment of the loop is ($({\mu _0} = {\rm{permeability}}\,{\rm{constant)}}$)
	The magnetic moment of a circular coil carrying current is
	A long wire A carries a current of 10 amp. Another long wire B, Which is parallel to A and separated by 0.1m from A, carries a current of 5 amp, in the opposite direction to that in A. what is the magnitude and nature of the force experienced per unit length of B$({\mu _0} = 4\pi \times {10^{ - 7}}\,weber/amp{\rm{ - }}m)$