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.

the inner core.

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klicker