surprise Voltage and Batteries

As we just said : a battery is built up by single cells.

If you want to see how it looks inside a battery, then just watch the following picture :

As you can see, the cells are connected to each other in series.

The reason is, that if you connect them in series, then the voltage of the single cells will be add to each other.

So here in this picture for example, the battery is built by six cells. If one cell has got a voltage of 2 V, then the voltage of the battery will be 12 V.

So when you have a basic circuit and you connect a load (for example a lamp) across to the battery, then it will shine. If you take only the half of the cells (so here for example three cells), then you will also have half of the voltage and the lamp will only shine half as strong as before.

So the more voltage your battery has, the more will your lamp shine.

You can explain this with the electric force of the battery.

The more cells you have, the more power has got the electric force to push the electrons and to make them move so that we have got an electric current.

If your voltage is less, then the electric force will also be less than before and the power to push the electrons will be less then before. So the electric current will not be as strong as before.

Now we can begin to explain certain electronic devices like capacitors, diodes and semiconductors.

First let us look at an easy electronic device : the capacitor.

Otherwise click here to return to the first page and to chose another topic.

Here you can see another example of a battery.

Such kind of a battery is used in our cars.

Here you can see the different cells and how they are put together.