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Calculating Energy and Power Usage

Calculating Energy and Power Usage

Assessment

Interactive Video

Physics

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains how to calculate energy consumption in kilowatt hours for a 260-watt television used for 2.5 hours. It covers the conversion of watts to kilowatts and the application of the formula Energy = Power x Time. The tutorial emphasizes the importance of using the correct units and provides a step-by-step calculation, resulting in an energy consumption of 0.65 kilowatt hours.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main topic introduced in the video?

Calculating kilowatt hours

Calculating resistance

Understanding voltage

Measuring current

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the power rating of the television mentioned in the problem?

300 watts

260 watts

150 watts

500 watts

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the time duration for which the television is used?

4 hours

3 hours

2.5 hours

1.5 hours

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula used to calculate energy in kilowatt hours?

Energy = Power / Time

Energy = Power + Time

Energy = Power x Time

Energy = Power - Time

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you convert watts to kilowatts?

Divide by 1000

Multiply by 1000

Subtract 1000

Add 1000

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the converted power of the television in kilowatts?

0.026 kilowatts

26 kilowatts

2.6 kilowatts

0.26 kilowatts

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the calculated energy usage of the television in kilowatt hours?

0.5 kilowatt hours

1.5 kilowatt hours

0.65 kilowatt hours

0.75 kilowatt hours

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