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Age range: 7-11
Duration: 30-59 mins | 60 or more mins
  • D & T
  • Science

Investigating electricity

Investigating how lamp brightness changes with different voltages

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.

Activity info, teachers' notes and curriculum links

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.

This could be used as a one-off activity or as part of a wider unit of work focussing on electricity and electrical circuits. It could be used in conjunction with the IET Faraday Primary Poster – Circuits and Symbols.

The activity sheet includes teachers' notes, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved nations; England, Northern Ireland, Scotland and Wales.

All the activity sheets can be downloaded for free below!

All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students' and your schools' needs.

And please do share your classroom learning highlights with us @IETeducation

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