# How Much Do You Know About Fluorescent Bulbs?

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| By MSJ_Green
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MSJ_Green
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Quizzes Created: 2 | Total Attempts: 3,116
Questions: 10 | Attempts: 214

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How much do you know about Compact Fluorescent Lightbulbs? This quiz has been made for students and science lovers who have a deep knowledge of Physics. So, let's try out this quiz. All the best!

• 1.

### True or false: A watt is a measure of light output.

• A.

True

• B.

False

B. False
Explanation
A watt is a measure of the rate of energy being used.

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• 2.

### True or false: I should wait until an incandescent bulb has burned out before I install my new CFL.

• A.

True

• B.

False

B. False
Explanation
The energy savings from the CFL bulb will pay for the cost of a new incandescent in only 1 month. Throw the incandescent out, and start saving money (and energy) right away.

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• 3.

### True or false: CFLs can be used in bathrooms.

• A.

True

• B.

False

A. True
Explanation
CFLs will work in bathroom fixtures, and newer bulbs that brighten quickly are convenient for short usage periods. Humidity may shorten the life of the bulb, though.

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• 4.

### True or false: All ENERGY STAR-qualified CFLs can be used with dimmer switches.

• A.

True

• B.

False

B. False
Explanation
True or false: Special dimmable CFLs must be used in dimmable fixtures. They are available - just read the packaging carefully.

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• 5.

### True or false: Used CFLs can be disposed of with regular trash.

• A.

True

• B.

False

B. False
Explanation
CFLs contain small amounts of mercury and should be recycled. MSJ Green accepts used bulbs from the campus community for recycling.

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• 6.

### True or false: An ENERGY STAR-qualified bulb is a better purchase than a "long life" incandescent light bulb.

• A.

True

• B.

False

A. True
Explanation
CFLs will save significant energy and money compared to the best "long life" incandescent.

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• 7.

### True or false: CFLs can be used in outdoor fixtures.

• A.

True

• B.

False

A. True
Explanation
Look for bulbs designed for outdoor use.

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• 8.

### True or false: Replacing a single 100-watt incandescent bulb with a CFL can save me over \$100 per year.

• A.

True

• B.

False

B. False
Explanation
The maximum savings is about \$67 per year per bulb. Still a significant savings!

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• 9.

### True or False: CFLs cannot be used in cold climates.

• A.

True

• B.

False

B. False
Explanation
CFLs can be used almost anywhere - look for bulbs rated for cold climates when buying for outdoor fixtures.

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• 10.

### True or false: Once a CFL is turned on it should be left on all day.

• A.

True

• B.

False

B. False
Explanation
Use CFLs just as you would any other light bulb.

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