Summary of Electricity Explained
1: Electrical Energy
Electricity is important because we can use it to make so many things work. That's why we talk about electrical energy. MORE |
2. Inside Circuits
We're going to try and picture what goes on inside an electric circuit. The little black blobs are charges. MORE |
3. Atoms and Charge
We'll see that the things that are really flowing inside the wires of electric circuits are called electrons. MORE |
4: Complete Circuits
For a circuit to work there must be a complete conducting path from one terminal of the battery to the other. MORE |
5. Voltage and Current
We're going to see what voltage and current mean and how they can be measured. MORE |
6. Electrical Power
In the first lesson we saw that a bulb is brighter if energy is converted more quickly in it. MORE |
7: Resistance & Ohm's law
We're going to find out what happens to the current through a component as the voltage across it changes. MORE |
8. Parallel Circuits
We'll see why parallel circuits are so common. We'll also look at voltage, current, power and effective resistance. MORE |
9. Series Circuits
If bulbs are connected in series then there are two problems. The first is that both bulbs are dim. MORE |
10: Domestic Electricity
We’ll look at AC and DC, plugs, earth wires and fuses, and paying for electricity. MORE |
