Two long parallel straight wires P and Q are separated by a distance of 2.5 cm in vacumm. Wire P is fixed and carries a current of 5.0 A while wire Q is free to move and carries a current of 8.0 A as shown in the diagram.

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Chapter1: Units, Trigonometry. And Vectors
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5. Two long parallel straight wires P and Q are separated by a distance of 2.5 cm in vacumm.
Wire P is fixed and carries a current of 5.0 A while wire Q is free to move and carries a
current of 8.0 A as shown in the diagram.
2.5 cm
Wire P
Wire Q
What is the magnitude and direction of the force per unit length on wire Q that would
prevent wire Q from moving.
A. 3.2 X 10-4 Nm-1 towards wire P
B. 3.2 X 10-4 Nm-1 away from wire P
C. 1.0 X 10-5 Nm-1 towards wire P
D. 1.0 X 10-5 Nm1 away from wire P
Transcribed Image Text:5. Two long parallel straight wires P and Q are separated by a distance of 2.5 cm in vacumm. Wire P is fixed and carries a current of 5.0 A while wire Q is free to move and carries a current of 8.0 A as shown in the diagram. 2.5 cm Wire P Wire Q What is the magnitude and direction of the force per unit length on wire Q that would prevent wire Q from moving. A. 3.2 X 10-4 Nm-1 towards wire P B. 3.2 X 10-4 Nm-1 away from wire P C. 1.0 X 10-5 Nm-1 towards wire P D. 1.0 X 10-5 Nm1 away from wire P
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