Question:medium
Two long and parallel straight wires A and B carrying current 5 A each in the same direction. If the force on a 5 cm section of wire B is \(5 \times 10^{-6}\, \text{N}\), then the separation between the two wires is (Given \( \mu_0 = 4\pi \times 10^{-7} \, \text{SI} \)).
Two long and parallel straight wires A and B carrying current 5 A each in the same direction. If the force on a 5 cm section of wire B is \(5 \times 10^{-6}\, \text{N}\), then the separation between the two wires is (Given \( \mu_0 = 4\pi \times 10^{-7} \, \text{SI} \)).
Show Hint
For parallel wires, always use \(F = \frac{\mu_0 I_1 I_2}{2\pi d}L\) when length is given.
Updated On: Jun 20, 2026
- 2.5 cm
- 5 cm
- 7.5 cm
- 10 cm
Show Solution
The Correct Option is B
Solution and Explanation
Was this answer helpful?
0
Top Questions on Magnetic Field
- A circular loop of radius 0.2 m carries a current of 4 A. What is the magnetic field at a point on the axis of the loop at a distance 0.2 m from the center?
- MHT CET - 2025
- Physics
- Magnetic Field
- A coil of 100 turns, carrying a current of 5A, is placed in a magnetic field of 2T. The area of each turn is 0.01 m\(^2\). What is the magnetic moment of the coil?
- MHT CET - 2025
- Physics
- Magnetic Field
- A 0.5 m long solenoid has 100 turns and carries a current of 3A. What is the magnetic field at the center of the solenoid?
- MHT CET - 2025
- Physics
- Magnetic Field
In a uniform magnetic field of \(0.049 T\), a magnetic needle performs \(20\) complete oscillations in \(5\) seconds as shown. The moment of inertia of the needle is \(9.8 \times 10 kg m^2\). If the magnitude of magnetic moment of the needle is \(x \times 10^{-5} Am^2\); then the value of '\(x\)' is
- NEET (UG) - 2024
- Physics
- Magnetic Field
- Want to practice more? Try solving extra ecology questions todayView All Questions