The solution of a typical series circuit problem requires the
application of Ohm's law and the series circuit formulas contained in
this lesson. The formulas used are determined by analyzing the
information given in the problem and the answers required.
Refer to the circuit above. When the current flowing through any
resistor is known or can be calculated, the total current is
determined by using the formula
It = IR1 = IR2 = IR3
It = IR2
It = 2 A
The total current in the circuit above may also be calculated by
using the Ohm's law formula
It = Et
Rt
= 100 volts
50 ohms
It = 2 A
1-13
IT0334
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