More batteries, brighter bulb
Associate the brightness of a lamp or volume of a buzzer with the number and voltage of cells used in a series circuit
Typical age: 10–11 years
“Can your child explain why adding a second battery makes the bulb brighter, and predict what happens with three batteries?”
0 / 3 mastered
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Needs first
- How switches workREQUIRED
Must understand switches and circuits before investigating voltage effects
- Circuit vocabularyREQUIRED
Associating brightness with voltage requires 'voltage', 'current', and 'series circuit' vocabulary
- How energy travels around
Energy transfer concept supports understanding voltage as energy per charge
Unlocks next
- Current, voltage, and what they measureREQUIRED
KS2 observation that more cells gives brighter bulbs is the empirical foundation for defining voltage as energy per charge
- Drawing circuits with proper symbolsREQUIRED
Must understand circuit behaviour before representing circuits with formal symbols
- Why circuit components behave differentlyREQUIRED
Must understand voltage-brightness relationship before comparing component variations