Question

Two long, parallel wires are separated by a distance of 3.40 cm. The force per unit length that each wire exerts on the other is 4.20x10-5 N/m and the wires repel each other. The current in one wire is 0.520 A. Part A What is the current in the second wire? 10 AP R O ? Submit Request Answer Part B Are the two currents in the same direction or in opposite directions? In the same direction In opposite direction Submit Request Answer Provide Feedback

Answer 1

S. Greiten data, force per unit bength(E) = 4.20x105Nm. Current in one wire LI) = 0.520 A seperated Distance = 3.40com (a.) we need to find the current in the other wire. The magnitude of the force per unit length between two wires carrying current of I and I' es given by. IF Mo I'II (a) I = 13.73A IL 208 16. opposite direction Salve for I' Answer I'= £2ar L L Mo7 = (4.20 X10 Nm / x 2X7X (0.0360m) (47X10? Tim/A) (0.520 A) I'= 13.73 A Answer leg 7.) we know that for a two parallel conductor carrying current in the same direction attract each other and for a two parallel conductors casoying currents in opposite direction repel each other since two were repel each other then the current in the second wire must flow in the opposite opposite direction