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Work, Energy and Power — Practice Quiz

Telangana Open School (TOSS) · Class 12 · Physics

Try a 4-question quiz on Work, Energy and Power for Telangana Open School (TOSS) Class 12 Physics: tap an answer to check it and see why.

47 questions25 flashcards15 formulas & key relations5 concepts

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Quick Quiz: Work, Energy and Power

0/4

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1

Which of the following is a scalar quantity?

2

When a force acts perpendicular to the displacement, what is the work done?

3

What is the dimensional formula of work?

4

1 kilowatt-hour is equal to:

47 Questions·
multiple choicemultiple correcttrue false

Sample Questions

1multiple choice
1 marks

Work done by a force is positive when:

Show answer

θ = 0°

When θ = 0°, cosθ = 1, so W = FS > 0, positive work.

2multiple choice
1 marks

The work done by gravity when a body is lifted upwards is:

Show answer

Negative

When lifting, displacement is upward, gravity downward, so θ = 180°, cos180° = -1, so W = -mgh.

3multiple choice
1 marks

Kinetic energy of a body depends on:

Show answer

Mass and velocity

Kinetic energy K = ½mv², so it depends on mass and velocity.

4multiple choice
1 marks

What is the unit of power?

Show answer

Watt

The SI unit of power is watt (W), which is joule per second.

+43 more questions on Work, Energy and Power (Telangana Open School (TOSS) Class 12 Physics)

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Frequently Asked Questions

What are the important topics in Work, Energy and Power for Telangana Open School (TOSS) Class 12 Physics?
Key topics in Work, Energy and Power include Work and Its Calculation, Work Done by Variable Force and Springs, Kinetic Energy and Work-Energy Theorem, Potential Energy and Conservation of Energy. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How many practice questions are there for Work, Energy and Power?
There are 47 questions on Work, Energy and Power. Try the 4-question sample quiz on this page first; each answer shows an explanation when you tap it.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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