In electronics we can find both series and parallel circuits.
A series circuit is a circuit where the components are connected in a consecutive chain. This gives the current only one path to take.
A parallel circuit is a circuit where the components are connected parallel to each other. So the current will flow in several paths.
Often a circuit is a mix of series and parallel circuits.
Current in series circuits
The current in a series circuit is equal everywhere in the path. The same amount of current flows through all the components. To find the current use Ohm’s law
Resistance in series circuits
If you have several resistors connected in series, it’s very easy to find the total resistance. All you have to do is to find the sum of all the resistance values.
Capacitance in series circuits
Capacitors connected in series are a little more complicated to calculate, but still easy once you learn it.
This is the formula for calculating capacitance values:
To find CTOTAL you need to flip both sides, and you’ll end up with this:
Calculating resistance and capacitance in a parallel circuit is kind of funny. You just switch the methods from the series circuits =)
To calculate resistances in parallel you use the same method used to calculate capacitors in series. And vice versa.
Current in parallel circuits
The current in parallel circuits can be different from path to path. To find the current of a path, you use Ohm’s law.
Calculating resistance in parallel circuits
To calculate the resistance in a parallel circuit, you use the following formula
To find RTOTAL you need to invert both sides, and you’ll end up with this:
Calculating capacitance in parallel circuits
You calculate capacitance in a parallel circuit simply by taking the sum of all the capacitance values.
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