Questions in Moving Charges and Magnetism

Select	Question
	A vertical wire carrying a current in the upward direction is placed in horizontal magnetic field directed towards north. The wire will experience a force directed towards
	A coil carrying electric current is placed in uniform magnetic field, then
	A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the axis of the loop is
	A power line lies along the east-west direction and carries a current of 10 ampere. The force per metre due to the earth's magnetic field of ${10^{ - 4}}\,tesla$ is
	A straight wire of length 0.5 metre and carrying a current of 1.2 ampere placed in a uniform magnetic field of induction 2 Tesla. The magnetic field is perpendicular to the length of the wire. The force on the wire is
	Two parallel wires in free space are 10 cm apart and each carries a current of 10 A in the same direction. The force one wire exerts on the other per metre of length is
	The current sensitivity of a moving coil galvanometer can be increased by
	A circular coil of diameter 7cm has 24 turns of wire carrying current of 0.75A. The magnetic moment of the coil is
	Two long parallel wires carrying equal current separated by 1m, exert a force of $2 \times {10^{ - 7}}N/m$ on one another. The current flowing through them is
	Two parallel beams of electrons moving in the same direction produce a mutual force