Understanding Electric Current and the Ampere
Electric current represents the rate of flow of electric charge past a point in an electrical circuit. Measured in amperes (A), one ampere equals the movement of one coulomb of electrical charge (approximately 6.242 × 10¹⁸ electrons) per second. In everyday electronics, current is frequently specified in milliamperes (mA) for portable gadgets and microamperes (µA) for ultra-low-power microchips.
