The electrostatic potential of a conductor is lower inside the conductor than on the surface of the conductor.

The magnification of the image of an object placed at the center of curvature of a concave mirror is unity

The SI unit of electrical power is the watt and it is a derived unit, one watt being equal to one kilogram meter squared per second cubed.

Only the component of the net force parallel to the displacement of an object can change the kinetic energy of the object.