Physics
Grade-9
Easy

Question

Electrical energy is changed to ____ in light bulbs.

  1. Heat energy
  2. Light energy
  3. Both a and b
  4. Chemical energy

Hint:

The electrical energy generated in a circuit is converted into other useful forms of energy.

The correct answer is: Both a and b


    Electrical energy is changed to heat (thermal) energy and light energy in light bulbs.
    • The electrical energy generated in a circuit is transformed into other useful forms of energy.
    • It depends on the electric load.
    • In the bulbs, the electric energy is converted into heat (thermal) energy.
    • Since light is electromagnetic energyelectrical energy can be changed into light energy.

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