The electrical energy is involved in this transformation will be 120 J. Option D is correct.
According to the law of conservation of energy, the energy of an isolated system stays unchanged throughout time; it is said to be conserved.
Energy can not be created nor be destroyed and can be transferred from one form to the other form.
We have an initial amount of electrical energy. Which is turned into two types of energy, electric and the light energy.
Electrical energy, (E)=?
Light energy (L)=100 J
Heat energy (H) =20 J
The equation is found as;
[tex]\rm E= L + H \\\\ E=100+20 \\\\ E=120 \ J[/tex]
Hence, the electrical energy is involved in this transformation will be 120 J.
To learn more about the law of conservation of energy, refer to the link;
https://brainly.com/question/2137260
#SPJ2
