Current Electricity

When there is a movement of electrical charges, there is a current flow - Current Electricity. The convention direction of current flow is from positive terminal to negative terminal. Upon the discovery of electron flow, we understand that it is the electrons that flow not the protons. Electron flow from the negative terminal to the positive terminal. 

In order to understand Current Electricity better, you need to know Ohm's Law.

Ohm's Law states... ...

Voltage = Current X Resistance

V = I X R

where voltage, V is measured in volts (V); current, I is measured in Amperes (A) and resistance, R measured in ohms (Ω)

In calculations of resistance, current, potential difference (p.d.) or voltages in a circuit, Ohm's law is a must. Basically, in order to calculate effectively these quantities effectively, you need to be at least familiar with the following circuit... ...

• Series Circuit

• Parallel Circuit 

• Series - Parallel Circuit

There are some general rules for both series and parallel circuits. However, there also some that only applies to the individual only.

General Rules for both Series and Parallel Circuits

• The amount of current exit from positive terminal is equal to the amount of current entering the negative terminal of the battery.
• The amount of current in the circuit is depends on the overall resistance of the circuit.

	Basic Circuit Diagram

Find out more about the individual rules for series circuit and parallel circuit.

• Series Circuit

• Parallel Circuit 

• Series - Parallel Circuit

Copyright 2008