Asked Jan 5, 2020

An AC appliance cord has its live wire and neutral wire separated by 3.00 mm and
carries a 5.00 A current.
a) What is the force per unit length between the wires?
b) Are the forces between the two wires attractive or repulsive? Explain.
c) Do appliance cords need any special design features to compensate for these
forces? Explain.


Expert Answer

Step 1

The expression for the force per unit length between the wires is given by

Physics homework question answer, step 1, image 1
Step 2

(b)  If the currents in parallel conductors are in the same direction, the force will be attractive and if the currents in the parallel conductor...

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