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Experiment 5 - Resistors in a Series Circuit

Consider the circuit shown with two resistors of 1 kΩ connected in series. With the ohmmeter you measure a total resistance of 2 kΩ.

Measurement of the resistance of a series circuit. (Enlarge)

Circuit diagram of a series circuit.

For two resistors in a series circuit the total resistance RTotal is the sum of the individual resistances, or in other words ...

RTotal = R1 + R2

You can check this by using different resistors...

Series Circuit

If the components are connected such that there is only one path for the current through the components, it is called a series circuit.

From Kirchhoff's Current Law (KCL) follows that the same amount of current flows through all the components.

Yet in the next experiment, you take a closer look at the voltages in the circuit.

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