Series circuits
The total
resistance of the circuit is found by simply adding up the
resistance values of the individual
resistors: equivalent
resistance of
resistors in
series : R = R
1 + R
2 + R
3 + ... A
series circuit is shown in the diagram above. The current flows through each
resistor in turn.
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The total resistance of a series circuit is equal to the sum of individual resistances. Voltage applied to a series circuit is equal to the sum of the individual voltage drops. The voltage drop across a resistor in a series circuit is directly proportional to the size of the resistor.