Magnetic force between linear and circular conductors · CAP 2006 #17
Physics · electromagnetism
Problem
A linear conductor with current I₁ is placed along the axis of a circular conductor, which carries current I₂. The magnetic force acting on each of the conductors is:
(a) zero;
(b) directly proportional to the product of currents I₁ and I₂, and inversely proportional to the radius of the circular conductor;
(c) directly proportional to the product of currents I₁ and I₂, inversely proportional to the square of the radius of the circular conductor;
(d) directly proportional to the product of current I₁, current I₂, and the area of a circular conductor;