Efficiency Year 10 Physics

Efficiency Year 10 Physics

Assessment

Flashcard

Physics

12th Grade

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is efficiency in physics?

Back

Efficiency is the ratio of useful output energy to the total input energy, often expressed as a percentage.

2.

FLASHCARD QUESTION

Front

How do you calculate efficiency?

Back

Efficiency (%) = (Useful Output Energy / Total Input Energy) x 100

3.

FLASHCARD QUESTION

Front

If a machine has an efficiency of 75% and uses 200J of energy, how much energy is wasted?

Back

50J is wasted.

4.

FLASHCARD QUESTION

Front

What is the unit of efficiency?

Back

Efficiency is often expressed as a percentage.

5.

FLASHCARD QUESTION

Front

What is the energy transformation in a car engine?

Back

Chemical energy from fuel is transformed into mechanical energy.

6.

FLASHCARD QUESTION

Front

What is the energy transformation in a solar panel?

Back

Solar energy is transformed into electrical energy.

7.

FLASHCARD QUESTION

Front

What is the energy transformation in a light bulb?

Back

Electrical energy is transformed into light energy.

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