Investigating LDRs
Investigate how light intensity affects resistance
Investigate how the resistance of a Light Dependent Resistor (LDR) changes with light intensity using this interactive simulation.
"Physics is the science of all the tremendously powerful invisibilities - of magnetism, electricity, gravity, light, sound, cosmic rays. Physics is the science of the mysteries of the universe."
Circuit Builder
Investigate how current and voltage change in simple circuits
Build and analyse series and parallel circuits. Measure current and voltage in real-time with interactive circuit symbols.
Investigating Thermistors
Investigate how temperature affects resistance
Change the water bath temperature and measure the resistance of an NTC thermistor using an ohmmeter. Record results and plot a graph.
I-V Graphs
Explore current-voltage characteristics
Plot and compare I-V graphs for a fixed resistor, filament lamp, and diode. Observe how current varies with voltage for each component.
Potential Dividers
Understand how voltage is shared between resistors
Build a potential divider circuit and see how the output voltage changes as you adjust the ratio of resistances. Includes LDR and thermistor examples.
Electrostatic Charging
Explore static electricity and charge transfer
Rub polythene and acetate rods with a cloth and observe how charged rods attract or repel.
Energy and Power in Circuits
Calculate energy transfer and electrical power
Read the voltmeter, ammeter and timer for a heater, lamp or motor, then work out the power and energy transferred yourself.
Fuse Selection Lab
Choose the right fuse for an appliance
Read an appliance rating plate, work out the operating current, and pick the 3 A, 5 A or 13 A fuse that protects the flex. Targeted feedback on every choice.