2.4 Electrical Power Flashcards
1
Q
What energy transformations take place in electrical appliances?
A
Electrical energy—-> other form of energy
2
Q
What is the unit of energy?
A
Joules (J)
3
Q
What is the power rating of an appliance measured as?
A
The number of joules of energy it transforms per second
4
Q
What is the unit of electrical power?
A
Watts (W)
5
Q
What is the equation involving energy, power and time?
A
Energy= power x time E= P x t
