Electrical Engineering Fundamentals Interview Practice Test

Charge is the amount of electric electricity carried by matter. It’s a quantity, not a rate. Think of it as how much electric “stuff” has moved or is stored, and it’s measured in coulombs. In circuits, the flow rate of charge is current, which tells you how many coulombs pass a point per second. The total charge that moves through a point over a period of time is Q = I × t, so saying charge is the “value” of electricity flowing captures that it’s the amount, not the speed of the flow.

That’s why other terms represent different things: current is the rate of flow, resistance is what opposes that flow, and voltage is the pushing force that drives the flow.