A long horizontal wire `P` carries of `50 A`. It is rigidly fixed. Another fine wire `Q` is placed directly above and parallel to `P`. The wieght of wire `Q` is `0.075 N//m` and carries a current of `25 A`. Find the position of wire `Q` from `P` so that the wire `Q` remains suspended due to magnetic repulsion.

A long horizontal wire P carries a current of 50A. It is rigidly fixed. Another wire Q is placed directly above and parallel to P, as shown in figure below. The weight per unit length of the wire Q is 0.025 Nm^(-1) and it carries a current of 25A. Find the distance .r. of the wire Q from the wire P so that the wire Q remains at rest.

A long horizontally fixed wire carries a current of 100 A directly above and parallel to it is a fine wire that carries a current of 20 A and weight 0.04 N/m The distance between the two wires for which the upper wire is just supported by magnetic repulsion is

Three long straight and parallel wires carrying currents are arranged as shown in the figure. The wire C which carreis a current of 5.0 amp is so placed that it experiences no force. The distance of wire C from D is then

Three long straight and parallel wires carrying currents are arranged as shown in the figure. The wire C which carreis a current of 5.0 amp is so placed that it experiences no force. The distance of wire C from D is then

Two long, straight, parallel wires are 1.00m apart (as shown in Fig). The upper wire carries a current I_1 of 6.00A into the plane of the paper. What is the magnitude of the net field at Q?

A semicircular wire of radius 5.0 cm carries a current of 5.0 A. A magnetic field B of magnitude 0.50 T exists along the perpendicular to the plane of the wire. Find the magnitude of the magnetic force acting on the wire.

A long wire having a semi-circular loop of radius r carries a current I, as shown in Fig. Find the magnetic field due to entire wire.

A wire has a length of 2.0m and a resistance of 5.0(Omega) .Find the electric field existing inside the wire if it carries a current of 10A.

Two long parallel wires placed 0.08 m apart, carry currents 3 A and 5 A in the same direction. what is the distance from the conductor carrying the larger current to the point where the resultant magnetic field is zero?

A wire placed along north-south direction carries a current of 10 A from south to north. Find the magnetic field due to a 1 cm piece of wire at a point 200cm north-east from the piece.