Physics P1.3

HideShow resource information
  • Created by: Matty_G16
  • Created on: 20-05-16 10:38
What useful energy transfer takes place in an electric drill?
Electrical energy to kinetic energy.
1 of 8
Which electrical appliance usefully transfers electrical energy into light and sound energy?
A television/computer.
2 of 8
How many watts are equivalent to 12 kilowatts?
12,000 W.
3 of 8
An electric motor transfers 48 kj of electrical energy into kinetic energy in 2 minutes. What is the useful power output of the motor?
400 W.
4 of 8
How much electrical energy, in kWh, is transferred when a 9 kW shower is used for 15 minutes?
2.25 kWh.
5 of 8
The price of 1 kWh of electrical energy is 9p. How much does it cost to use a 60 W electric light for 4 hours?
2.16p.
6 of 8
What might environmental costs include?
The removal or disposal of old equipment and environmental taxes.
7 of 8
Loft insulation costs £600 including installation. It saves £80 per year on the fuel bill. How long is the payback time?
7.5 years.
8 of 8

Other cards in this set

Card 2

Front

Which electrical appliance usefully transfers electrical energy into light and sound energy?

Back

A television/computer.

Card 3

Front

How many watts are equivalent to 12 kilowatts?

Back

Preview of the front of card 3

Card 4

Front

An electric motor transfers 48 kj of electrical energy into kinetic energy in 2 minutes. What is the useful power output of the motor?

Back

Preview of the front of card 4

Card 5

Front

How much electrical energy, in kWh, is transferred when a 9 kW shower is used for 15 minutes?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Energy resources »