Question

If an incandescent light bulb used for lighting has an efficiency rating of 5 percent, then for every 1.00 joule of electrical energy consumed by the bulb, how much heat/light energy is produced?

A) 0.05 J of light energy
B) 0.02 J of light energy
C) 0.2 J of light energy
D) 0.45 J of light energy

Answer 1

For every 1.00 joule of electrical energy consumed by the bulb, 0.05 joules of heat/light energy is produced.

Step-by-step explanation:

To find out how much heat/light energy is produced by an incandescent light bulb with an efficiency rating of 5 percent, we need to calculate the amount of electrical energy consumed.

We can do this by multiplying the efficiency rating (0.05) by the electrical energy input (1.00 joule).

So, 0.05 x 1.00 = 0.05 joules.

Therefore, the amount of heat/light energy produced is 0.05 joules.