Electric current
Electric current-
An electrical current is a flow of electric charge, measured in amperes (symbol A), where a current of one ampere is a total charge of one coulomb flowing in one second. Ampere is often denoted to amp.In a circuit, positive and negative electric charges typically flow in the opposite direction to each other, as shown in Figure.
Figure- Current flow in an example circuit showing a light bulb (lamp) powered by a battery: (a) schematic using pictures to represent the components; (b) the
same circuit using standard circuit schematic symbols. By convention, current flows in the opposite direction to the flow of electrons.
