A closed Loop PQRS carrying a current is placed in a uniform magnetic field. If the magnetic forces on segment PS, SR and RQ are F
1 , F
2 and F
3 respectivley and are in the plane of the paper and along the directions shown, the force on the segment QP is .............................
Options:
(a) `sqrt((F_3- F_1)^2- F_2^2)`
(b) `F_1 -F_2+ F_3`
(c) `-F_1 +F_2+ F_3`
(d) `sqrt((F_3- F_1)^2- F_2^2)`