Answer:
<em>10.75 A</em>
<em>The current is in opposite direction since it causes a repulsion force between the wires</em>
Explanation:
Force per unit length on the wires = 4.30×10^−5 N/m
distance between wires = 2.6 cm = 0.026 m
current through one wire = 0.52 A
current on the other wire = ?
Recall that the force per unit length of two wires conducting and lying parallel and close to each other is given as
=
where is the force per unit length on the wires
= permeability of vacuum = 4π × 10^−7 T-m/A
= current on the first wire = 0.520 A
= current on the other wire = ?
r = the distance between the two wire = 0.026 m
substituting the value into the equation, we have
4.30×10^−5 = =
4.30×10^−5 = 4 x 10^-6
= (4.30×10^-5)/(4 x 10^-6) = <em>10.75 A</em>
<em>The current is in opposite direction since it causes a repulsion force between the wires.</em>