Question

you turn on a light in a room to read a book. not all the energy from the lightbulb becomes light energy. what happens to the rest of the energy from the lightbulb?
a. it is transformed into thermal energy.
b. it is transformed into chemical energy.
c. it is transformed into magnetic energy.
d. it is transformed into electrical energy.

Explanation:

When a light - bulb is turned on, not all electrical energy is converted into light energy. Due to the resistance in the filament, some of the energy is dissipated as heat. This is based on the principle of energy conservation and the inefficiency of light - bulb operation.

Answer:

A. It is transformed into thermal energy.