(Continued)
The current through R1 is the same as that
through R2 (branch current); therefore, IR1
is equal to IA,
IR1 = IR2 = IA
IA = 10 a
IR1 = IR2 = 10 a
a
Notice that the additional branches placed
in parallel with branch A do not affect the
currant through branch A.
The voltage drop across R1 is
ER1 = IR1 X R1
= 10 a x 15
ER1 = 150 V
It is imperative that the current through
the particular resistor under consideration
be used in determining the voltage across
the resistor. Total circuit current exceeds
any resistor current and cannot be used in
finding a particular resistor voltage.
The method described above may be used to
find the current through and the voltage
across any particular resistor in a parallel
circuit.
2-13
IT0334
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