Two long parallel wires are 0.4 m apart in air and carry currents of 5 A and 12 A respectively. Calculate the force on each metre of the wire, fi the currents are in the same direction .

Two long parallel wires are 0.4 m apart in air and carry currents of 5 A and 12 A respectively. Calculate the force per metre of wire if currents are in the opposite direction. Given mu_0 = 4 pi 10^-7 T A^-1 m.

Two long parallel wires are carrying currents of 5 A and 12 A respectively. If the force per unit length between these wires is 3 xx 10^-5 N m^-1 , the distance between them should be

Two long parallel straight wires X and Y separated by a distance of 5 cm in air carry current of 10 A and 5 A respectively in opposite directions. Calculate the magnetic force and direction of the force on a 20 cm length of the wire Y.

Two parallel wires in free spaces are 10cm apart and each carries a current of 10A in the same direction. The force one wire exerts on the other per metre of length is

Two long conductors, separated by a distance d carry current I_(1) and I_(2) in the same direction . They exert a force F on each other. Now the current in one of them is increased to two times and its direction is reversed . The distance is also increased to 3d. The new value of the force between them is