Multiple choice

Which of the following cannot be considered as an energy source?

  1. Generator

  2. Transformer

  3. Solar cell

  4. Rheostat

  5. Battery

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

Rheostat is the variable resistance, i.e. we can vary the value of resistor using rheostat. Rheostat is not energy source. It is used only to increase or decrease the given voltage value in lab experiments.