Light globes - series & parallel

See how the brightness of globes changes depending on whether they are connected to the power supply in series or parallel.

Light globes - Combination circuits

See how the brightness of globes changes depending on how they are connected in different ways to a power supply.

Ohm's law

Investigate the relationship between voltage, resistance & current.

Series resistors

Investigate the combined resistance of two resistors in series.

Parallel resistors

Investigate the combined resistance of two resistors in parallel.

Resistor colours

Learn how to read the colour codes on resistors.

Voltage divider - resistors in series

See what happens to the voltages across components in series in a circuit.

Current divider - resistors in parallel

See what happens to the current through components in parallel in a circuit.

Circuit calculations

Investigate the changing resistance's determine the voltage & current in different branches of a circuit.

Kirchoff's laws

Solve the equations to calculate the unknowns.

Transformer

Explore how a transformer works; try to get the light as bright as possible.

DC Motor

This animation shows the turning effect (torque) acting on a DC motor through its rotation.

Capacitor charge / discharge

Investigate the time taken to charge or discharge a capacitor in an RC circuit.

Rectifer smoothing

Explore the effects of changing variables in a rectifiying circuit.

Transistors & amplifiers

This learning object gives an introduction to the basics of how a transistor works & how a transistor can be used as the basis of an amplifier.

Diode IV characteristics

Investigate the relationship between voltage and current for diodes.

Logic gates

Investigate the operation of the different digital logic gates.