Electrical engineering - Basics Page 14

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2.2 Parallel connection of resistors

If the power consumers (resistors) in an electric circuit are arranged parallel to each other, so that the same voltage is applied to each consumer, one speaks of a parallel connection.

Diagram 17: Parallel connection with three power consumers (resistors connected in parallel)

For parallel connections the following formulas apply:

1. Total amperage I or ITotal

2. Total voltage U or UTotal

3. Total resistance R or RTotal

Parallel connections are used above all if one wants to operate several power consumers with the same voltage but still wants to be able to switch these consumers on and off separately.


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