When the battery is connected up to the bulb to make a complete circuit, there is an electric current everywhere in the...

Physics Narrative 5-11 11-14

Electric currents do not get used up. In a simple circuit with one battery and one bulb, the size of the electric current is...

Physics Narrative 5-11 11-14

Scientists agree to use a convention which shows the direction of the electric charge flow (the current) in a circuit as being...

Physics Narrative 5-11 11-14

There are three steps in this episode.

Physics Narrative 5-11 11-14

What happens when a second battery is added to the circuit so that we now have two batteries and one bulb?

Physics Narrative 5-11 11-14

Adding a second battery to the circuit has the effect of producing a bigger push from the two batteries acting together...

Physics Narrative 5-11 11-14

What happens when a second bulb is added to the circuit, so that we now have one battery and two bulbs all connected in series...

Physics Narrative 5-11 11-14

Given that there are now two equal resistances in the circuit, and bearing in mind that energy is shifted wherever there is an...

Physics Narrative 5-11 11-14

Stop for a moment and think of all of the places where magnets are used in your home. There are the magnetic catches on the...

Physics Narrative 5-11 11-14

The everyday world of magnets is really all about those magnetic materials that can be magnetised to make permanent magnets...

Physics Narrative 5-11 11-14

Supposing you take a bar magnet and suspend it freely at its mid-point on a length of thread. Once the magnet stops spinning...

Physics Narrative 5-11 11-14

Take a simple bar magnet–the sort that is found in physics lessons–in the form of a rectangular block of steel. Bring another...

Physics Narrative 5-11 11-14