Eddy currents in a metal disc makes it temporarily a magnet which moves a compass needle nearby. Some speedometers work in a similar
This generator charges a metal dome up to a potential of 300,000 volts. Explore some of the effects this produces, including giant
A plastic rod electrically charged by rubbing attracts a stream of water.
Circuits in Parallel
Investigate making a circuit in parallel.
Circuits in Series
Investigate making a circuit in series.
A magnet dropped down a copper tube slows down due to eddy currents.
Electricity flows through a coil of wire when a magnet is moved through it.
A hanging wire circles a magnet when electric current flows through the wire.
How does a scrapyard crane work? This shows that an electromagnet is only magnetic when electricity is flowing.
Strong electric forces cause air to conduct electricity (ionise it). This is seen as a spark that moves up the tube.
Shows how a loudspeaker works. A coil around a magnet moves when electricity flows through the coil.
A force is produced when an electric current flows through a wire placed in a magnetic field. This causes the wire to jump.
An aluminium disc floats above electromagnets.
How can you identify the magnet from the identical iron bar?
A big magnet floats above another showing magnetic repulsion.
Magnet Springs (Traveller)
A big magnet floats above another showing magnetic repulsion. (Built to travel.)
Magnetic Field Patterns
Investigate the field patterns around different shapes of magnet.
In this cathode ray tube electrons are revealed as they hit a fluorescent screen (as in a TV). You can experiment on the electrons with
magnets and static charge.
Demonstrates how simple electric motors work
Moving Static Electricity
Static electricity is detected using an electroscope.
This plore allows measurements to be made on a circuit and a graph drawn to illustrate Ohm's Law: that the current passing through a wire
is proportional to the voltage across it.
Pedal a bike to power lights, a TV, radio and fans. Shows 'muscle energy' being converted to electrical then to other forms of energy.
A glass globe, containing gases at low pressure, has a high voltage and a radio transmitter at its centre. Tendrils of glowing plasma
stream out to where you touch the globe.
Tendrils of glowing plasma stream out to where you touch the tube.
Sparks (moving electricity) near an ordinary radio makes it crackle and hiss. The aerial picks up electromagnetic radiation, and does so
much better if you become part of it!
Bits of foam are attracted to a Perspex cover when it is rubbed with a cloth.
Suspended bar magnets demonstrate attraction and repulsion.
Solar Powered Wave Machine
Make waves in a tank of water. A float and electrical generator make electricity to power a lighthouse.
Investigate using switches in circuits.
The voltage of alternating current (AC) electricity can be changed using a transformer. Find out how. Transformers are used in all sorts of
electrical equipment around our homes.
What Works in a Circuit?
Investigate making a conductors, insulators and resistance.
An electrical circuit includes a long wire. By connecting meters measuring current and voltage to parts of the wire you can find out what
electrical resistance does and how it can be used to make a simple voltage control.