The figure shows a cross section of three parallel wires each carrying a current of 15 A.The currents in wires A and C are out of the paper,while that in wire B is into the paper.If the distance R = 5.0 mm,what is the magnitude of the force on a 4.0-m length of wire C?
A)90 mN
B)54 mN
C)30 mN
D)18 mN
E)36 mN

Question

The figure shows a cross section of three parallel wires each carrying a current of 15 A.The currents in wires A and C are out of the paper,while that in wire B is into the paper.If the distance R = 5.0 mm,what is the magnitude of the force on a 4.0-m length of wire C? 
A)90 mN 
B)54 mN 
C)30 mN 
D)18 mN 
E)36 mN

Quizplus · Accepted Answer

The Answer of The figure shows a cross section of three parallel wires each carrying a current of 15 A.The currents in wires A and C are out of the paper,while that in wire B is into the paper.If the distance R = 5.0 mm,what is the magnitude of the force on a 4.0-m length of wire C? 
A)90 mN 
B)54 mN 
C)30 mN 
D)18 mN 
E)36 mN

The Figure Shows a Cross Section of Three Parallel Wires