Question

You are a scientist working on increasing the efficiency of appliances to waste less

electricity. You are running experiments measuring the input, output, and waste energy
from 3 light bulbs. Given the data below, determine which model has the lowest
percentage of energy lost as waste.
Lightbulb 1: 200 joules in, 50 joules wasted, 150 joules out
Lightbulb 2: 100 joules in, 30 joules wasted, 70 joules out
Lightbulb 3: 150 joules in, 100 joules wasted, 50 joules out

Answer 1

Answer: lightbulb 1: 200 joules in, 50 joules wasted, 150 joules out

Step-by-step explanation:

Answer 2

Lightbulb 1 has the lowest percentage of energy lost as waste : 25%

Further explanation

Given

The input, output, and waste energy of Lightbulb

Required

The lowest percentage of energy lost as waste.

Solution

Lightbulb 1 :

`\tt \%energy~lost=(50)/(200)* 100\%=25\%`

Lightbulb 2 :

`\tt \%energy~lost=(30)/(100)* 100\%=30\%`

Lightbulb 3:

`\tt \%energy~lost=(100)/(150)* 100\%=66.7\%`