Multiple choice

Which instrument converts light energy into electrical energy?

  1. Amplifier

  2. Motor

  3. Dynamo

  4. Photo electric cell

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

A photo electric cell works on the photoelectric effect - when light strikes certain materials, electrons are ejected, creating electrical energy. Amplifiers increase signal strength, motors convert electricity to motion, and dynamos convert mechanical energy to electrical energy.