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Power in Parallel R-C Circuit - h1011v3_76
Power in Series R-C-L Circuit - h1011v3_78
Electrical Science Volume 3 of 4
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Basic AC Power
POWER TRIANGLE
3.
pf
cos
q
q
arctan
I
C
I
R
cos
arctan
I
C
I
R
cos
arctan
3
4
cos(arctan(36.9°))
pf
0.80
4.
P
EIcos
q
(120)(5)(0.80)
P
480 watts
5.
Q
EIsin
q
(120)(5)(0.6)
Q
360 VAR
6.
S
EI
(120)(5)
S
600 VA
Rev. 0
Page 11
ES-09
