Energy Efficiency

Energy Efficiency

4th Grade

15 Qs

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Energy Efficiency

Energy Efficiency

Assessment

Quiz

Physics

4th Grade

Practice Problem

Hard

Created by

Mr Boyle

Used 102+ times

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15 questions

Show all answers

1.

FILL IN THE BLANK QUESTION

1 min • 5 pts

Calculate the useful energy output for a device when its total energy input is 60 kJ and it has an efficiency of 23%.

2.

FILL IN THE BLANK QUESTION

1 min • 5 pts

Media Image

Calculate the kinetic energy output for a toy car when its battery provides 80 kJ and it has an efficiency of 84%.

3.

FILL IN THE BLANK QUESTION

1 min • 5 pts

Media Image

Calculate the useful energy output for a light bulb when total energy input is 3000 J and it has an efficiency of 32%.

4.

FILL IN THE BLANK QUESTION

1 min • 5 pts

Media Image

Calculate the useful energy output for a toaster when total energy input is 51230J and it has an efficiency of 60%.

5.

FILL IN THE BLANK QUESTION

1 min • 5 pts

Media Image

Calculate the useful energy output for a buzzer when total energy input is 8700 J and it has an efficiency of 3%.

6.

FILL IN THE BLANK QUESTION

1 min • 5 pts

Calculate the total energy output for a device which has an efficiency of 23% and produces 13.8 kJ of useful energy.

7.

FILL IN THE BLANK QUESTION

1 min • 5 pts

Media Image

Calculate the total energy output for a toy car which has an efficiency of 84% and produces 67200 J of kinetic energy.

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