Two long, parallel wires are separated by a distance of 3.80 cm . The force per unit length that each wire exerts on the other is 4.90×10−5 N/m , and the wires repel each other. The current in one wire is 0.540 A .(a) What is the current in the second wire? (b) Are the two currents in the same direction or in opposite directions?

(a). I' = 17.24 A

(b).The current in second wire is in opposite direction compare to first wire.

Explanation:

Given data

r = 0.038 m

4.9 ×

I = 0.54 A

(a). The current in the second wire is calculated as

Put all the values in above formula we get

I' = 17.24 A

(b). The current in the two wires is in opposite directions because the wires repeal each other. therefore the current in second wire is in opposite direction compare to first wire.

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