hopkins (tlh982) – HW08 – criss – (4908)
1
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printout
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have
11
questions.
Multiplechoice questions may continue on
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before answering.
001
(part 1 of 4) 10.0 points
The primary coil of a certain transformer has
an inductance of 1
.
16 H and a resistance of
71
.
7 Ω.
If the primary coil is connected to an ac
source with a frequency of 93
.
4 Hz and a
voltage of 150 V
rms
, what is the
rms
current
through the primary? Answer in units of A.
002
(part 2 of 4) 10.0 points
If the primary is connected to 72
.
4 V dc, what
is the current through the primary? Disregard
initial effects. Answer in units of A.
003
(part 3 of 4) 10.0 points
In case 1, find the power dissipated in the
resistance. Answer in units of W.
004
(part 4 of 4) 10.0 points
In case 2, find the power dissipated in the
resistance. Answer in units of W.
005
10.0 points
An ac power generator produces 60 A
rms
at 4259 V.
The voltage is stepped up to
1
.
59
×
10
5
V by an ideal transformer, and the
energy is transmitted through a longdistance
power line that has a resistance of 65 Ω.
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 Fall '08
 CRISS
 Physics, Alternating Current, 9 cm, 108 m/s, 40 W

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