ELECTRICITY

Links checked 24th June 2008

Calculating the yearly cost of domestic appliances, with kWh (in dollars!)

This is a simple simulation of two resistors in series.  You click on the top or bottom of the resistors to increase or decrease their values, and the voltage across them changes.

Animation of electrons passing through the lattice of a lamp, hitting the atoms to produce heat.

This is a beautiful simulation of electrons orbiting a proton/nucleus. You launch your electron at your speed and direction, and it will go into orbit - if you get it right. You can have several running at the same time - and they electrostatically interact with each other.

ELECTROMAGNETIC INDUCTION

Induced current simulated by changing the shape of the coil in a magnetic field, is OK

And how about this Generator with the graph of voltage out, ability to pause, and change frequency of rotation. You can remove the field, current, and force, directions to start with - ask the pupils.

This is a basic transformer.  You can change the number of coils, and it shows them on the core, and the amplitudes of the AC in and out change accordingly.