Section 2
Resistors in Series and Parallel
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Version 3
By Boundless
By Boundless
Boundless Physics
Physics
by Boundless
5 concepts
![Thumbnail](../../../../../../figures.boundless-cdn.com/12909/square/figure-22-01-02.jpeg)
Resisitors in Series
The total resistance in the circuit with resistors connected in series is equal to the sum of the individual resistances.
![Thumbnail](../../../../../../figures.boundless-cdn.com/12916/square/figure-22-01-04.jpeg)
Resistors in Parallel
The total resistance in a parallel circuit is equal to the sum of the inverse of each individual resistances.
![Thumbnail](../../../../../../figures.boundless-cdn.com/30763/raw/ors-in-series-and-parallel.jpg)
Combination Circuits
A combination circuit can be broken up into similar parts that are either series or parallel.
![Thumbnail](../../../../../../figures.boundless-cdn.com/13511/square/figure-22-02-12.jpeg)
Charging a Battery: EMFs in Series and Parallel
When voltage sources are connected in series, their emfs and internal resistances are additive; in parallel, they stay the same.
![Thumbnail](../../../../../../figures.boundless-cdn.com/13505/square/figure-22-02-02.jpeg)
EMF and Terminal Voltage
The output, or terminal voltage of a voltage source such as a battery, depends on its electromotive force and its internal resistance.