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Transcript
Electric Power: the rate at which electrical energy
is converted to another form of energy.
P
P=power in watts
V
I
I =current in amperes
V=voltage(potential difference in volts
(see page 614-615)
Electrical Energy: the rate at which electrical
power is used.
E
P=power in kilowatts
P t
t =time in hours
E=energy in kilowatthours
(see page 616-617)
9
2
1
0
4
0
7
9
4
7
8
9
7
5
6
0
8
6
2
4
5
5
6
3
2
1
0
3
6
5
1
7
kilowatthour meter dials
1
8
2
4
3
3
8
9