P27_040.PDF
(
51 KB
)
Pobierz
Chapter 27 - 27.40
40. (a) The monthly cost is (100W)(24h
/
day)(31day
/
month)(6cents
/
kW
·
h) = 446cents = $4
.
46, assum-
ing a 31-day month.
(b)
R
=
V
2
/P
= (120V)
2
/
100W = 144Ω.
(c)
i
=
P/V
= 100W
/
120V = 0
.
833A.
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P27_069.PDF
(63 KB)
P27_001.PDF
(53 KB)
P27_003.PDF
(56 KB)
P27_007.PDF
(54 KB)
P27_002.PDF
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chap01
chap02
chap03
chap04
chap05
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