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Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

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Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 20.3, Problem 3RC
Textbook Problem
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Which of the following lighting sources is the most energy efficient? (You may need to seek this information on the web.)

  1. (a) Light-emitting diodes
  2. (b) Incandescent lightbulbs
  3. (c) Fluorescent lights
  4. (d) Candles

Interpretation Introduction

Interpretation: It should be determined for the following lighting source is the most energy efficient.

Concept Introduction:

Light-emitting diodes:

The light emitting diode is a P-N junction diode. It is a special doped diode and mad e up of a special type of semiconductors. When the light emits in the forward biased, then it is called as a light emitting diode.

The light emitting diode is a two – led semiconductor light source.

Nick Holonyak invented the idea of light emitting diode, and he was working for the general electric company.

The LED is a special type of diode and they have similar electrical characteristic of a PN junction diode.

Hence the LED allows the flow of current in the forward direction and blocks the current in the reverse direction.

Nonrenewable sources are those for which the energy source is used and not concurrently replenished.

Renewable energy sources:

The sun energy is an example of renewable resources.

These include solar energy and energy derived from wind, biomass, and moving water likewise geothermal energy is a renewable resources.

Explanation of Solution

Reason for correct option

The light emitting diode is a P-N junction diode. It is a special doped diode and mad e up of a special type of semiconductors. When the light emits in the forward biased, then it is called as a light emitting diode.

The light emitting diode is the most energy efficient source among the given option.

The LED is a special type of diode and they have similar electrical characteristic of a PN junction diode.

Hence the LED allows the flow of current in the forward direction and blocks the current in the reverse direction...

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Chemistry & Chemical Reactivity
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