As per question, lF=4πμo×r2I1I2=2π×0.14π×10−7×2×5×10=10−4Nm−1 The nature of the force is attractive. (where, the symbols have their usual meanings)
Two very long, straight, parallel conductors A and B carry current of 5 ~A and 10 ~A respectively and are at a distance of 10 ~cm from each other.…
NEET UG 2022 — Physics Electromagnetism
2022mcqeasy
Two very long, straight, parallel conductors A and B carry current of 5 A and 10 A respectively and are at a distance of 10 cm from each other. The direction of current in two conductors is same. The force acting per unit length between two conductors is (μ0=4π×10−7 SI unit):
Official previous-year question
Held on 30 Apr 2022 · Verified 9 Jul 2026.
Options
- A
2×10−4Nm−1 and is attractive
- B
2×10−4Nm−1 and is repulsive
- C
1×10−4Nm−1 and is attractive
- D
1×10−4Nm−1 and is repulsive
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