AP EAMCET201823 Apr 2018Morning ShiftPhysicsMagnetic Effects of CurrentActual
A current carrying square loop is placed near a straight infinitely long current carrying wire as shown in the figure. The torque acting on the loop is
Options
- A₀ 2 i₁ i₂ l a b
- B₀ 2 i₁ i₂ l a(a+b)
- C₀ 2 i₁ i₂ l(b-a) a b
- D0
Correct answer
D. 0
Step-by-step solution
The forces acting on the sides of the square due to current i , all lie in the planes of the coil. Therefore, there is no net torque.