AP EAMCET202120 Aug 2021Morning ShiftPhysicsMagnetic Effects of CurrentActual
What is the net force on the square coil?
Options
- A25 × 10 - 7   N moving towards wire
- B25 × 10 - 7   N moving away from wire
- C35 × 10 - 7   N moving towards wire
- D35 × 10 - 7   N moving away from wire
Correct answer
A. 25 × 10 - 7   N moving towards wire
Step-by-step solution
Force due to straight wire on the current-carrying coil is, F = F A B + F B C + F C D + F A D F B C  and   F A D   are equal and opposite therefore will cancel each other effect F A B = μ 0 2   A 1   A 15 × 10 - 2   m 2 π 2 × 10 - 2   m F C D = - μ 0 2   A 1   A 15 × 10 - 2   m 2 π 0 . 12   m Net force on the square coil A B C D   is, F = μ 0 2   A 1   A 15 × 10 - 2   m 2 π 2 × 10 - 2 &#