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A light bulb converts electrical energy into light energy and also some thermal energy. The amount of electrical energy is 50 Joules before the conversions.

What is the total amount of energy from before the conversions to after the conversions?

Question 6 options:

45 Joules because some energy is lost when it is put off as heat.


100 Joules because you start with one form of energy and end up with two forms, so a number of energy doubles.


50 Joules because as energy converts from one form to another, it cannot be created or destroyed during the conversion.


55 Joules because as more electricity comes from the light bulb, the Joules increase.

Answer :

Total amount of energy would remain constant according to law of conservation of energy. i.e., 50 Joules

In short, Your Answer would be Option C) 50 Joules because as energy converts from one form to another, it cannot be created or destroyed during the conversion.

Hope this helps!

Your answer is C hope this helps.

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