circuits

CIRCUITS

What is a circuit?

An electric circuit is a path in which electrons from a voltage or current source flow.

The point where those electrons enter an electrical circuit is called the "source" of electrons. The point where the electrons leave an electrical circuit is called the "return" or "earth ground". The exit point is called the "return" because electrons always end up at the source when they complete the path of an electrical circuit.

Circuit elements:

1. Battery
2. Switch
3. Ground
4. Lamp
5. Ressistor
6. Capacitor
7. Diode

Series circuits:

In a series circuit, the current through each of the components is the same, and the voltage across the circuit is the sum of the voltages across each component. In a parallel circuit, the voltage across each of the components is the same, and the totalcurrent is the sum of the currents through each component.

Parallel circuits:

A parallel circuit has two or more paths for current to flow through. Voltage is the same across each component of the parallel circuit. The sum of the currents through each path is equal to the total currentthat flows from the source.

Mixed circuits:

The basic strategy for the analysis of combination circuits involves using the meaning of equivalent resistance for parallel branches to transform the combination circuit into a series circuit. Once transformed into a series circuit, the analysis can be conducted in the usual manner.,The method for determining the equivalent resistance of parallel are equal, then the total or equivalent resistance of those branches is equal to the resistance of one branch divided by the number of branches.