Manipal MET2018PhysicsMagnetic Effects of Current
A, B and C are parallel conductors of equal lengths carrying currents I, I and 2 I respectively. Distance between A and B is x . Distance between B and C is also x . F₁ is the force exerted by B on A . F₂ is the force exerted by C on A . Choose the correct answer.
Options
- AF₁=2 F ₂
- BF₂=2 F₁
- CF₁=F₂
- DF₁=-F₂
Correct answer
D. F₁=-F₂
Step-by-step solution
aligned & F_ B A = ₀ I^2 2 x (attractive force) & and F_ C A = ₀(I)(2 I) 2 (2 x) = ₀ I^2 2 x (repulsive force) & Hence, F_ B A =-F_ C A & F₁=-F₂ aligned