If the magnitude of electric force and magnetic force are equal and if v of a charged particle is perpendicular to both `vec(E) " and " vec(B)`, then find the net force on the charge.

Explanation

Zero.
Note : `vec(F)_(mag)=qvec(v) times vec(B)=q(vhat(i) times Bhat(k))=-qvBhat(j)`
`vec(F)_("ele")-qEhat(j)" " therefore" "vec(F)=q(E-vB)vhat(j)`
if `F_("ele")=F_(mag)` then net force F = 0.