Question

I need to study about electric current

Answer 1

An electric current is a flow of electric charge.It is denoted by the symbol I. Its SI unit is ampere(A). The relationship between voltage(V),resistance(R) and current(I) is V=IR; this is known as ohm's law.In electric circuits, charge is created by moving electrons.Electric current is measured using a device called an ammeter.Electric current can also be carried by ions in an electrolyte,or by both ions or electrons in an ionised gas