Series Circuit Equivalent Resistance (Lesson 4b)

In any Series Ciurcuit, there can be 2 or more resistances.

There is one very important Series Circuit property about Resistance. That is: The equivalent Resistance of a Series Circuit is equal to the Sum of all the individual Resistances (resistors) in the Circuit.

Expressed in Algebraic Form: Req = R1 + R2 + R3 + ..... Rn
where n is the last component of the circuit.

As you can see from Diagram above, the equivalent Resistance of the Circuit (Total Resistance) is equal to the Sum of the individual Resistors A, B and C. (1 + 2 + 3 = 6 ohms)

Ohm's law can now be applied to find the equivalent current. This is done by using the equivalent Resistance of the Circuit and the applied Voltage emf:/battery. (See Series Circuit Current Property - next topic.) By implementing Ohm's law in the Diagram above, we can see that the current of the circuit is equal to 2 Amp. (12 v / 6 ohms).

Next topic: Series Circuit Current Property (Lesson 4c)
Select other topics for Series Circuit or Review Ohms' law or Series Circuit Connection:

• Series Circuit Current Property (Lesson 4c) --- Next topic
• Series Circuit Voltage Property (Lesson 4d)
• Series Circuit Properties & Ohms' law Applications (Lesson 4e)

  REVIEW:

• Ohm's Law Review (Lesson 3)
• Series Circuit Connection Review (Lesson 4a)

If you have any suggestions, comments, please e-mail me at emil@magicnet.net Otherwise, come back soon.