Science
Power
In this Class 9 Science topic from “Work, Energy, and Simple Machines,” students learn that power is the rate at which work is done or energy is transferred. They use the formula P = W/t, understand its SI unit watt, and relate watts to larger units such as kilowatt. The topic helps them compare how quickly different people, machines, or devices perform the same work, solve basic numerical problems, and connect power with everyday examples such as lifting loads and operating simple machines.
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Practice questions are not available for this topic yet. We plan to add questions with clear explanations soon. You can keep practising other topics in the meantime.
- Class / subject
- 9 · Science
- Chapter
- Work, Energy, and Simple Machines
- Topic
- Power
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