not just described, Explained

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

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