Manipal MET2011PhysicsMagnetic Effects of Current
Two parallel conductors A and B of equal length carry currents i and 10 i , respectively, in the same direction. Then
Options
- AA and B will repel each other with same force
- BA and B will attract each other with same force
- CA will attract B , but B will repel A
- DA and B will attract each other with different forces
Correct answer
B. A and B will attract each other with same force
Step-by-step solution
The magnitude of force acting on length l of each conductor due to other is F l = ₀ 2 i₁ i₂ r array ll Given & i₁=i, i₂=10 i & F l = ₀ 2 10 i^2 r array From Fleming's left hand rule, this is force of attraction.