This is one of a set of resources developed to support the teaching of the primary national curriculum. They are designed to support the delivery of key topics within science and design and technology. This resource focusses on the investigation of how different supply voltages affect the brightness of a lamp.
Lamps produce light when connected to an appropriate power supply, such as a battery. Investigating how different battery voltages affects their brightness is key to understanding how series electrical circuits work.
In this activity learners will assemble three different lamp circuits; one powered by a single AA battery, one powered by two AA batteries and one powered by three AA batteries. They will investigate the brightness of the lamp for each configuration. They will learn about current, voltage and how simple series circuits work.
Show health and safety information
Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.