KIRCHHOFF’S LAWS
Basic DC Theory
In equation form, Kirchhoff’s current law may be expressed:
Figure 35 Illustration of Kirchhoff’s Current Law
IIN - IOUT = 0
(2-16)
or
IIN = IOUT
Normally Kirchhoff’s current law is not used by itself, but with the voltage law, in solving a
problem.
Example:
Find I2 in the circuit shown in Figure 36 using Kirchhoff’s voltage and current
laws.
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