SERIES CIRCUIT
Updated: Sep 7, 2020
Series circuits A series circuit is a circuit in which resistors are arranged in a chain, so the current has only one path to take. The current is the same through each resistor. 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 = R1 + R2 + R3 + ...
A series circuit is shown in the diagram above. The current flows through each resistor in turn. If the values of the three resistors are:
R1 - 8 ohm R2 - 8 ohm R3 - 4 ohm With a 10 V battery, by V = I R the total current in the circuit is: I = V / R = 10 / 20 = 0.5 A. The current through each resistor would be 0.5 A.
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