GCSE Physics - Power and Work Done #7

GCSE Physics - Power and Work Done #7

Assessment

Interactive Video

Created by

Quizizz Content

Physics

9th - 10th Grade

Hard

The video tutorial explains the concept of power, highlighting two definitions: power as the rate of energy transfer and power as the rate of work done. It clarifies the term 'work done' and distinguishes it from energy transfer. The tutorial includes examples comparing the power of two lamps and calculating energy transfer in a microwave. It also demonstrates how to calculate power when work is done, such as pushing a car. Key units like watts, joules, and kilojoules are discussed.

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2 questions

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1.

OPEN ENDED

3 mins • 1 pt

If a lamp transfers 1,200 joules over 20 seconds, what is its power in watts?

2.

OPEN ENDED

3 mins • 1 pt

What is the power used when doing 9 kilojoules of work over 20 seconds?