A closed loop `PQRS` carrying a current is place in a unifrom magnetic forces on segments `PS, SR` and `RQ` are `F_(1), F_(2)` and `F_(3)` respectively and are in the plane of the paper and along the directions shown, the force on the segment `QP` is

Options

A. `F_(3)-F_(1)+F_(2)`
B. `F_(3)-F_(1)-F_(2)`
C. `sqrt((F_(3)-F_(1))^(2)+F_(2)^(2))`
D. `sqrt((F_(3)-F_(1)^(2)-F_(2)^(2))`

Answer

C