Magnetism and electromagnetismQuestion 355 of 1506

Which source of electromotive force is used to produce most of the electrical energy we use?

  1. Chemical reaction
  2. Heat on unlike metals
  3. Pressure on crystals
  4. Electromagnetic induction
Show answer

Correct answer: Electromagnetic induction

Generators and alternators produce power by moving conductors in a magnetic field.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 1.1: Basic principles

Practice magnetism and electromagnetism

Questions last reviewed: 18 October 2026