Which of the following does not have dimensions of force?

Answer

B

Explanation

By work energy throrem `W_(g)+W_("elec")=DeltaKE`

`mgl(1-1/sqrt(2))+qExxl/sqrt(2)=1/2 mv^(2)-0`
`( :' E=(mg)/q) u=sqrt(2gl), W=u/l=sqrt((2g)/l)`