Electricity
Understand charge, current, voltage, resistance, circuit analysis, EMF and internal resistance
What you'll learn
- 1
Imagine a water pipe. When you turn on the tap, water flows. In an electric circuit, the battery is like a pump that pushes tiny particles called electrons around the wire.
- 2
What is the 'push' from a battery called?
- 3
Drag the battery voltage and resistor to see how changing voltage affects the current in the circuit.
- 4
A circuit has a 6V battery and a 2Ω resistor. What is the current?
- 5
If voltage = 12V and resistance = 3Ω, what is the current?
- 6
Build a series circuit with a 9V battery and two 3Ω resistors. What is the total current?
- 7
In a series circuit with two identical resistors, what happens to the current if you double the voltage?
Practise Electricity with Whizlo
Free AI-tutored lessons, unlimited practice questions, and progress tracking for ages 16–18. Aligned to the UK National Curriculum.