P2.4 Current and Voltage
Video - What is electricity?
Simulation - Echalk electric circuit

Video - Electric Current
Revision Video - Current and Voltage

P2.5 Investigating voltage, current and resistance

Video - Charge moving in a circuit
Revision Video - Series and parallel circuits

Changing Resistance
Simulation - Ohm's Law

Video - IV Charicteristics of resistors and filament lamps and diodes 

Revision Video - Circuit symbols

Transferring energy
Simulation - Battery resistor circuit
Video - How does a light bulb work?