5.3 electrical power and potential difference Flashcards
(7 cards)
1
Q
What is the power supply to your device?
A
The energy transferred to it each second
2
Q
How do you calculate the energy transferred to a device?
A
E = P x t
3
Q
How do you calculate the electrical power supplied to an appliance?
A
P = I x V
4
Q
How do you calculate the correct rating for a fuse?
A
Correct rating for a fuse = electrical power (watts) / potential difference (volts)
5
Q
What does E represent?
A
Energy transferred
6
Q
What does P represent?
A
Power
7
Q
What does T represent?
A
Time
