Three long, straight, parallel wires all lie in the yz plane and each carries a current of 20 A in the positive z direction. The two outer wires are each 4.0 cm from the center wire. What is the magnitude of the magnetic force on a 50-cm length of either of the outer wires?
A) 1.0 mN
B) 0.50 mN
C) 1.1 mN
D) 1.5 mN
E) 2.0 mN

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The Answer of Three long, straight, parallel wires all lie in the yz plane and each carries a current of 20 A in the positive z direction. The two outer wires are each 4.0 cm from the center wire. What is the magnitude of the magnetic force on a 50-cm length of either of the outer wires?
A) 1.0 mN
B) 0.50 mN
C) 1.1 mN
D) 1.5 mN
E) 2.0 mN

Three Long, Straight, Parallel Wires All Lie in the Yz