Question

How much electrical energy is involved in this transformation? 60 j 80 j 100 j 120 j

Answer 1

The initial amount of electrical energy involved is 120 J

What is Electrical energy:

• It is referred to as the energy that has been converted from electric potential energy.
• It is also derived as a result of movement of electrically charged particles.

Here,

we have an initial amount of electrical energy, E.

E is converted into two forms of energy

1. light energy (L)
2. heat energy (H)

given light energy, L = 20 J

and the Heat energy, H = 100 J

The law of conservation of energy states that energy cannot be created nor destroyed, but only converted into other forms.

According to The law of conservation of energy:

E = L + H

substituting the values, we get

E = 20 + 100

E = 120 J

So, option D is correct.

The initial amount of electrical energy involved is 120 J

Learn more about electrical energy here:

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Your question is incomplete as the figure is missing, but most probably the question was:

How much electrical energy is involved in this transformation?

60 J

80 J

100 J

120 J