PHYSICS · Multi-part · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism
Problem
Two very long, straight conductors are parallel to one another and separated by a distance d. One conductor carries a current of 10 A and the other carries a current of 15 A in the opposite direction.
(a) The magnitude of the magnetic force per unit length between the two conductors is required to be 3.0×10−4Nm−1. Determine the separation d that achieves this requirement.
(b) If both currents are simultaneously doubled while the separation found in part (a) is maintained, compute the new magnitude of the force per unit length.
(c) Explain, without additional calculation, how the result of part (b) illustrates the general dependence of the force on current and separation for two parallel conductors.