The unit of electric charge is the "coulomb," symbolized as "C." One coulomb is defined as the amount of electric charge that passes through a point in a conductor when a current of one ampere (1 A) flows for one second (1 s). In other words, it represents the quantity of electric charge transported by a current of one ampere in one second.
Mathematically, the relationship can be expressed as:
1 coulomb (C) = 1 ampere (A) × 1 second (s)
Electric charge is a fundamental property of matter, and its movement is what constitutes electric current. Submultiples of the coulomb, such as the milliampere-hour (mAh) or the microcoulomb (μC), are commonly used in various applications to express smaller quantities of charge.