Two long straight parallel conductors of length l ,separated by a distance d and each carrying a current I attract each other with a force equal to

Two long straight parallel conductors are separated by a distance of 5 cm and carrying current 20 A. what work per unit length of a conductor must be done to increases the separation between conductors to 10 cm, if the current flows in the same direction ?

Two long straight parallel conductors separated by a distance of 0.5m carry currents of 5A and 8A in the same direction. The force per unit length experienced by each other is

Two long straight conductors of length 1 m each separated by a distance of half metre and carrying currents of 200 A and 50 A respectively in opposite directions. Then the force of attraction is

Two long, thin parallel conductors, separated by a distance d , carrying currents i_(1) and i_(2) . The force acting on unit length of any one conductor is F

Two thin long parallel wires seperated by a distance 'b' are carrying a current ' I' amp each . The magnitude of the force3 per unit length exerted by one wire on the other is

Two thin long paralel wires separated by a distance b are carrying a current 1 A each. The magnitude of the force per unit length exerted by one wire on the other is