The correct answer is A: Physical effect
Physical effect or phenomenon, any thing which manifests itself. ... Physical effect, a consequence of causality (physics) Physical effect, a therapeutic effect or adverse effect on a material or body.
An electric current is passing through a conductor which becomes hot after some time and produces heat. This is due to the conversion of some of the electrical energy that passes through the conductor, into heat energy. This effect of electric current is called the heating effect of current.The two effects of electric current are; heating effect and magnetic effect: This happens because when electric current passes through a conducting wire, a magnetic field is created around the wire. The magnetic field causes deflection in the magnetic compass.
Four of the major effects of electricity are the magnetic effect, heating effect, chemical effect, and electrical effect or electrical shock. Magnetic effects occurs in some devices such as door bells and buzzers. This devices create sounds because of the magnetic effect. They have electromagnets inside.
Alternating Current (AC) - Alternating current is current where the flow of electric charge is constantly changing directions. Alternating current is mostly used today to transmit power on power lines. In the United States the frequency at which the current alternates is 60 Hertz.