What is meant by electric current and potential?

ELECTRIC CURRENT An electric current is a flow of electric charge per unit time. In electric circuits this charge is often carried by moving electrons in a wire. Electric current can be measured using a device called an ammeter. read more

THE RELATIONSHIP BETWEEN ELECTRIC CURRENT AND POTENTIAL DIFFERENCE Potential difference, V • A gravitational analogy can be used to explain electric potential difference. read more

Current density is a measure of the density of an electric current. It is defined as a vector whose magnitude is the electric current per cross-sectional area. In SI units, the current density is measured in amperes per square metre. read more

A potential difference, also called voltage [voltage: The potential difference of a cell, electrical supply or electric component. It is measured in volts, 'V'.], across an electrical component is needed to make a current [current: Moving electric charges, for example, electrons moving through a metal wire.] flow through it. read more