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Ciruit Ehments
problem. Choosing a good approach and the appropriate tools will usually
reduce the numbei and complexity of equations to be solved. Example 2.10
illustrates another application of Ohm\ law and Kirchhoff's laws to a cir
cuit with a dependent
source.
Example 2.11involves
a much more compli
cated circuit, but with a careful choice of analysis
tools,
the analysjs
is
relatively uncomplicated.
Apptying
ohm's Law and Kirchhoff's
Laws
to Find an Unknown
Vottage
a) Use Kirchhoff's
laws and Ohm's
law to find the
voltage
,r, as shown
inFig.2.23.
b) Show that your solution is consistent with the
constraint
that the total power developed
jn
the
circuit equals
the total power dissipated.
2A
Applying Ohm's law to the 3 O resistor g.Ives
the desired
voltage:
?)o
:
3to

3V
b) To compute
the power delivered
to the voltage
sources,
we use
the power equation
in the form
p
:
ol. The powei delivered
to the independent
volrage
source
ls
p
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This note was uploaded on 07/05/2010 for the course EE 100 taught by Professor Boser during the Spring '07 term at University of California, Berkeley.
 Spring '07
 Boser

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