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Series Circuits

What is the Total Resistance of a Series Circuit?

You can calculate the total resistance of a series circuit
by adding up the resistance of each component.

Rtotal = R1 + R2 + R3 .....

Resistance in a Series Circuit

In the circuit above with three resistors, the
total resistance Rtotal is
the sum of the values of the three resistors.

Rtotal = R1 + R2 + R3

   = 2 + 3 + 4

  = 9 ohms.

This is a much bigger resistance
than a parallel circuit using the same resistors.

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