Multiple choice

The instrument used to convert electric energy into heat energy is

  1. microphone

  2. electric heater

  3. photo electric cell

  4. electric motor

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An electric heater contains a heating element (resistor) that converts electrical energy into heat energy through Joule heating. Microphones convert sound energy to electrical energy, photo electric cells convert light energy to electrical energy, and electric motors convert electrical energy to mechanical energy.