Two parallel wires, 4 cm apart, carry currents of 2 A and 4 A respectively, in the same direction. The force per unit length in N/m of one wire on the other is: A. 1 × 10−3, repulsive B. 1 × 10−3, attractive C. 4 × 10−5, repulsive D. 4 × 10−5, attractive E. none of these

Two parallel wires, 4 cm apart, carry currents of 2 A and 4 A respecti

1.	Two parallel wires, 4 cm apart, carry currents of 2 A and 4 A respectively, in the same direction. The force per unit length in N/m of one wire on the other is: A. 1 × 10−3, repulsive B. 1 × 10−3, attractive C. 4 × 10−5, repulsive D. 4 × 10−5, attractive E. none of these
Answer» D. 4 × 10⁻⁵, attractive

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Two parallel wires, 4 cm apart, carry currents of 2 A and 4 A respectively, in the same direction. The force per unit length in N/m of one wire on the other is: A. 1 × 10−3, repulsive B. 1 × 10−3, attractive C. 4 × 10−5, repulsive D. 4 × 10−5, attractive E. none of these

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