P1 Energy (2) Power, efficiency and energy transfers AQA

P1 Energy (2) Power, efficiency and energy transfers AQA

10th - 12th Grade

18 Qs

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P1 Energy (2) Power, efficiency and energy transfers AQA

P1 Energy (2) Power, efficiency and energy transfers AQA

Assessment

Quiz

Physics

10th - 12th Grade

Practice Problem

Hard

Created by

Jodi Mellor

Used 56+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the definition of efficiency?

A measure of how much energy is wasted by an appliance

A measure of how quickly energy is transferred to an appliance

A measure of the energy transferred usefully to an appliance

A measure of the energy given off to the surroundings by an appliance

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the equation used to calculate efficiency?

Efficiency = total energy input / total energy output

Efficiency = useful energy output / total energy input

Efficiency = useful energy input / useful energy output

Efficiency = total energy input / useful energy output

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following can also be used to calculate efficiency?

Current

Voltage

Mass

Power

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which key term is used to describe energy being spread out or wasted?

Efficient

Deficient

Dissipate

Elevate

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What term is used to describe a method for reducing unwanted energy transfers by reducing friction?

Insulation

Titration

Lubrication

Dissipation

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a thermal insulator?

A non-conductive material

A conductive material

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of the method of reducing unwanted energy transfers by the use of non-conductive materials?

Insulation

Titration

Lubrication

Dissipation

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