MHT CET202415 May 2024Evening ShiftPhysicsMagnetic Effects of CurrentActual
Three infinite straight wires A , B and C carry currents as shown in figure. The resultant force on wire B is directed
Options
- Atowards A
- Btowards C
- Cperpendicular to the plane of page
- Dupwards
Correct answer
A. towards A
Step-by-step solution
F = BIL Magnetic field due to A: ₀ I 2 d = _o 2 d Force on B due to A , F _ AB = ₀ 2 ~d I L Magnetic field due to C : _ o I 2 ~d = _ o 3 2 ~d Force on B due to C, aligned & F _ CB = 3 _ o 2 ~d I L & ~F _ AB F _ CB aligned The resultant force will be towards A