Energy And Power Flashcards
1
Q
Ehat is power rating measured in?
A
Watts
2
Q
What does the pwoer rating tell you?
A
How much energy is trsnsferred per second
3
Q
Whats the pwer equation?
A
Power(w)=energy(j)
————
Time(s)
4
Q
12000 watts is the same as…
A
12 kilowatts
5
Q
Ehat do you need to keep a house at the same temperature?
A
Ransfer energy to it at the same rate as energy being trasnferred from it
6
Q
What are u paying when paying an electricity bill?
A
Paying for a fuel to be burnt at a power station
7
Q
Enrgy used in keh=
A
12kw x 1 hour
=12kwh
8
Q
Enrgy used in J=
A
12000 j/s x 3600s
= 43 200 000 j
9
Q
What can u use to reduce your energy bill?
A
Fewer appliances or appliances that require less power to produce the same output
