**Problem #6**You want to buy a lamp, and the store has only lamps of a nominal power of 150 watts. When you were ready to pick up a lamp, you observed that there were two piles: one pile was incandescent lamps and the other LED lamps. You remember that in class we discussed efficacy. Immediately, you find on your phone the following table:**Table: Lamp Power and Efficacy**| Flux (lumen) | 250 | 450 | 800 | 1100 | 1600 ||---------------|-----|-----|-----|------|------|| **Power [Watt]** | | | | | || Incandescent | 25 | 40 | 60 | 75 | 100 || Halogen | 18 | 29 | 43 | 53 | 72 || CFL | 6 | 10 | 13 | 18 | 23 || LED | 4 | 5 | 10 | 15 | 20 |**Efficacy [lumen/watt]:**| | Incandescent | Halogen | CFL | LED ||----------------|--------------|---------|--------|--------|| **Efficacy** | 10.0 | 13.9 | 41.7 | 62.5 || **(Average)** | 11.3 | 15.5 | 45.0 | 90.0 || | 13.3 | 18.6 | 61.5 | 80.0 || | 14.7 | 20.8 | 61.1 | 73.3 || | 16.0 | 22.2 | 69.6 | 80.0 || | 13.1 | 18.2 | 55.8 | 77.2 |Then you can answer the following questions:1. What is the illuminance flux of the incandescent lamp?2. What is the illuminance flux of the LED lamp?3. Explain which one you will buy and the reasons for your selection.

Given: Power of lamps in store = 150 Watt

Problem #6 You want to buy a lamp, and the store has only lamps of a nominal power of 150 watts. When you were ready to pick up a lamp, you observed that there were two piles one pile were incandescent lamps and the other LED lamps. You remember that in class we discussed about efficacy. Immediately, you find in your phone the following table Flux (lumen] 250 450 800 1100 1600 Power Power Power Power Power [Watt] [Watt] [Watt] [Watt] [Watt] Then you can answer the following questions: Incandescent 25 40 60 75 100 Halogen |CFL LED 18 29 43 53 72 1) incandescent lamp? 6 10 13 18 23 What is the illuminance flux of the 4 5 10 15 20 2) lamp? 3) What is the illuminance flux of the LED Efficacy (lumen/watt] Incandescent Halogen CFL Efficacy Average 10.0 11.3 13.3 16.0 Explain which one you will buy and the 14.7 13.1 13.9 15.5 18.6 20.8 22.2 18.2 reasons for your selection 41.7 45.0 61.5 61.1 69.6 55.8 LED 62.5 90.0 80.0 73.3 80.0 77.2

Problem #6 You want to buy a lamp, and the store has only lamps of a nominal power of 150 watts. When you were ready to pick up a lamp, you observed that there were two piles one pile were incandescent lamps and the other LED lamps. You remember that in class we discussed about efficacy. Immediately, you find in your phone the following table Flux (lumen] 250 450 800 1100 1600 Power Power Power Power Power [Watt] [Watt] [Watt] [Watt] [Watt] Then you can answer the following questions: Incandescent 25 40 60 75 100 Halogen |CFL LED 18 29 43 53 72 1) incandescent lamp? 6 10 13 18 23 What is the illuminance flux of the 4 5 10 15 20 2) lamp? 3) What is the illuminance flux of the LED Efficacy (lumen/watt] Incandescent Halogen CFL Efficacy Average 10.0 11.3 13.3 16.0 Explain which one you will buy and the 14.7 13.1 13.9 15.5 18.6 20.8 22.2 18.2 reasons for your selection 41.7 45.0 61.5 61.1 69.6 55.8 LED 62.5 90.0 80.0 73.3 80.0 77.2

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.

Question

**Problem #6**

You want to buy a lamp, and the store has only lamps of a nominal power of 150 watts. When you were ready to pick up a lamp, you observed that there were two piles: one pile was incandescent lamps and the other LED lamps. You remember that in class we discussed efficacy. Immediately, you find on your phone the following table:

**Table: Lamp Power and Efficacy**

| Flux (lumen) | 250 | 450 | 800 | 1100 | 1600 |
|---------------|-----|-----|-----|------|------|
| **Power [Watt]** | | | | | |
| Incandescent | 25 | 40 | 60 | 75 | 100 |
| Halogen | 18 | 29 | 43 | 53 | 72 |
| CFL | 6 | 10 | 13 | 18 | 23 |
| LED | 4 | 5 | 10 | 15 | 20 |

**Efficacy [lumen/watt]:**

| | Incandescent | Halogen | CFL | LED |
|----------------|--------------|---------|--------|--------|
| **Efficacy** | 10.0 | 13.9 | 41.7 | 62.5 |
| **(Average)** | 11.3 | 15.5 | 45.0 | 90.0 |
| | 13.3 | 18.6 | 61.5 | 80.0 |
| | 14.7 | 20.8 | 61.1 | 73.3 |
| | 16.0 | 22.2 | 69.6 | 80.0 |
| | 13.1 | 18.2 | 55.8 | 77.2 |

Then you can answer the following questions:

1. What is the illuminance flux of the incandescent lamp?
2. What is the illuminance flux of the LED lamp?
3. Explain which one you will buy and the reasons for your selection.

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