DC circuitsQuestion 560 of 1506

What is the unit of electric charge?

  1. The coulomb
  2. The ampere
  3. The joule
  4. The volt
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Correct answer: The coulomb

One coulomb is a certain number of electrons.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 2.1: Ohm’s Law - How Voltage, Current, and Resistance Relate

Practice dc circuits

Questions last reviewed: 18 October 2026