Question

1. A light bulb is turned on. It produces light and warms up. Which statement is true? All the electrical energy is transformed to heat energy. Some of the electrical energy is transformed to light energy and some is destroyed. All the electrical energy is transformed to light energy and heat energy. All the electrical energy is transformed to light energy.

Answer 1

The 3rd answer is correct as the way light is produced is where electricity heats up the metal (tungsten is the only metal that glows when heated) in the lightbulb thus producing light and heat energy at the same time also energy cannot be created nor destroyed it can only be transferred

Answer 2

C.) All the electrical energy is transformed to light energy and heat energy.

[ Remember, the first law of Thermodynamics,Energy can neither be created nor destroyed ]

Hope this helps!