Two current-carrying wires produce a repulsive force of magnitude F₀. The current in each wire is doubled, resulting in a force whose magnitude is A) (1/2)F₀. B) F₀. C) 2F₀. D) 4F₀.

Question

Quizplus · Accepted Answer

The force between two parallel current-carrying wires is directly proportional to the product of the currents in the wires. If the current in each wire is doubled, the force becomes (2I)*(2I) = 4I^2, which is four times the original force, hence the correct answer is 4F₀.

Two Current-Carrying Wires Produce a Repulsive Force of Magnitude F0

Two Current-Carrying Wires Produce a Repulsive Force of Magnitude F₀