January 2014
Intermediate to advanced
567 pages
23h 13m
English
Content preview from Principles of Analog Electronics
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Physical and Electrical Background
59
EXERCISE 5
If your electric company charges 10 [cents/kWh] for electricity, how much
would you pay to operate a
[]
60 W bulb for 24 hours?
ANSWER
MoneykWh10
cents
kWh
*0.06*24 0.144 $
[]
[] []
=
=
EX
ER
CI
SE 6
F
ind the magnetic induction eld
B
at the center of a circular current loop
of r = 2 cm radius, carrying a current of 3 A.
ANSWER
[]
[]
[]
=µ =π
≅
−
2
4*10
*3
2*0.02
0.94
0
7
B
I
r
Tm
A
A
m
T
K18911_Book.indb 59 27/12/13 6:24 PM
K18911_Book.indb 60 27/12/13 6:24 PM
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