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

Options

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

Answer

C

Explanation

`vec(l)` is `||^(a1)` to `vec(B)`
`vec(F)_(m) = i vec(l) xx vec(B) = 0`