yes,the direction of electric force on a charge is tangent of field lines.

the lines of force are not real. these lines of force are imaginary lines. so we can not touch it.

Yes. A force acts on the charge perpendicular to the plane defined by the charge velocity and the electric field line of force. The Electric field is is equivalent to and magnetic field E=cB, where c is the speed of light. This causes a power field P= cqvxB = c(qvxB) = cForce.

Maxwell was the first to predict that light was a form of electricity when he found this relationship, E=cB. Maxwell noticed that light and electric fields had the same speed, c.

An electric force is the force on an electric charge or an electrically

charged object when immersed in an electric field.

it uses electric force