To determine how many incandescent bulbs you would need to last as long as a single LED, we can compare their lifespans directly. Here’s a step-by-step breakdown:
1. Lifespan of Incandescent Bulbs:
- A typical incandescent bulb lasts 1,000 to 2,000 hours.
2. Lifespan of LED Bulbs:
- A typical LED bulb lasts between 25,000 and 50,000 hours.
3. Comparison (Using Average Lifespan Estimates):
- Let’s use the mid-point values for both types:
- Incandescent bulb lifespan: 1,500 hours.
- LED bulb lifespan: 35,000 hours (average between 25,000 and 50,000 hours).
4. Calculating the Number of Incandescent Bulbs:
To find how many incandescent bulbs are needed to last as long as a single LED, divide the LED lifespan by the incandescent bulb lifespan:35,000 hours1,500 hours per incandescent bulb=23.33\frac{35,000 \, \text{hours}}{1,500 \, \text{hours per incandescent bulb}} = 23.331,500hours per incandescent bulb35,000hours=23.33
This means you would need about 23 to 24 incandescent bulbs to match the lifespan of a single LED.
5. Number of Light Bulb Changes:
Since you would need 23 to 24 incandescent bulbs, that also means you would have to change the incandescent bulb 23 to 24 times over the lifespan of one LED.
Summary:
- A single LED bulb lasts as long as 23 to 24 incandescent bulbs.
- You would need to replace incandescent bulbs 23 to 24 times to match the lifespan of a single LED.
- This significant difference illustrates the cost savings in terms of both purchasing fewer bulbs and reducing the need for maintenance and replacements over time.
