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## Two long parallel wires are separated by 6.0 mm. The current in one of the wires is twice the other current. If the magnitude of the force o

Question

Two long parallel wires are separated by 6.0 mm. The current in one of the wires is twice the other current. If the magnitude of the force on a 3.0-m length of one of the wires is equal to 8.0 μN, what is the greater of the two currents?

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Physics
5 months
2021-08-05T17:36:34+00:00
2021-08-05T17:36:34+00:00 1 Answers
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## Answers ( )

Answer:The greater of the two currents is

0.692 AExplanation:Given;

distance between the two parallel wires; r = 6 mm = 6 x 10⁻³ m

let the current in the first wire = I₁

then, the current in the second wire = 2I₁

length of the wires, L = 3.0 m

magnitude of force on the wires, F = 8 μN = 8 x 10⁻⁶ N

The magnitude of force on the two parallel wires is given by;

the current in the second wire = 2I₁ = 2 x 0.346 A =

0.692 ATherefore, the greater of the two currents is

0.692 A