A current-carrying, straight wire is kept along the axis of a square loop carrying a current.The straight wire

Options

A. will exert an inward force on the square loop
B. will exert an outward force on the square loop
C. will not exert any force on the square loop
D. will exert a force on the square loop parallel to itself.

Answer

C

Explanation

Field produced by loop at the centre will be along the axis of the loop i.e. `||` to st. wire
So `F=i(vecixxvecB)=0`