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Q.A current of 10 A10\,\text{A} flows through two long parallel wires separated by 5 cm5\,\text{cm}. The force per unit length between them is

a
4×10−4 N/m4 \times 10^{-4}\,\text{N/m} (attractive)
b
4×10−4 N/m4 \times 10^{-4}\,\text{N/m} (repulsive)
c
2×10−4 N/m2 \times 10^{-4}\,\text{N/m}
d
2×10−5 N/m2 \times 10^{-5}\,\text{N/m}

Correct Answer: Option A

The correct solution involves applying the fundamental concept to derive the final value step by step...

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