Current is defined as the intensity of electron flow in a conductor.

• A. Voltage
• B. Power
• C. Current
• D. Frequency

Answer: (C)

Current is the rate at which electric charges move through a conductor. Describing it as the intensity of electron flow captures that idea: current measures how much charge passes a point each second. It’s measured in amperes, with 1 ampere equal to 1 coulomb per second. In a metal, electrons carry the charge, and while individual electrons drift slowly, a large number pass a given point every second, producing a measurable current. This quantity is distinct from voltage, which is the potential difference that drives the flow; from power, which is the rate of doing work (P = VI); and from frequency, which is how many times a cycle occurs per second in alternating current.