Start of main content
Age range: 7-11
Duration: 30-59 mins
  • D & T
  • Science

Fruit lights

Using lemons and limes to power an LED

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 use of fruit to power a light emitting diode (LED).

Did you know that fruit can be used to produce electricity? Connecting four lemons in series can provide enough voltage to light an LED! This also helps us to understand how batteries work.

Activity info, teachers' notes and curriculum links

In this activity learners will construct a series circuit consisting of four fruit batteries and an LED. They will learn about the main parts of a battery and how fruit can be used to provide enough voltage to light an LED. They will also investigate how the brightness of the LED changes depending on the number of fruit batteries used in the circuit.

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.

Download the free activity sheet 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

Available downloads

Download all the above

Related resources