Question 22
The table shows the efficiency of three different lamps.
| Type of lamp | Percentage of energy transferred electrically as light | Percentage as heat |
|---|---:|---:|
| Tungsten | 15 | 85 |
| Fluorescent | 80 | 20 |
| LED | 90 | 10 |
Which of the lamps in the table should you use? Explain your answer. (Hint: Think about which lamp will waste the smallest amount of electricity.)
| Type of lamp | Percentage of energy transferred electrically as light | Percentage as heat |
|---|---:|---:|
| Tungsten | 15 | 85 |
| Fluorescent | 80 | 20 |
| LED | 90 | 10 |
Which of the lamps in the table should you use? Explain your answer. (Hint: Think about which lamp will waste the smallest amount of electricity.)
