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Troubleshooting problems with circuits

I can solve problems and improve simple circuits.

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Lesson 5 of 10

New

Year 4

Troubleshooting problems with circuits

I can solve problems and improve simple circuits.

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Lesson details

Key learning points

A circuit will not work if it is not part of a complete loop with a battery.
Buzzers only work if they are connected in the correct direction.
To solve problems with circuits, scientists test whether they are connected correctly and whether the components work.
Electricians check if circuits have been built incorrectly and with improper wiring.
When we use electricity and electrical appliances, we need to follow rules to stay safe.

Keywords

Circuit - An electrical circuit is a closed loop or path that electricity can flow through to make a component work.
Complete - A complete electrical circuit is made when all components are connected together correctly and there are no breaks in the circuit.
Incomplete - An incomplete electrical circuit is made when the components are not connected together correctly or there are breaks in the circuit.
Connectors - Connectors are the places on components where the wires make contact to join it to the rest of the circuit.
Electrician - An electrician is an expert in electrical circuits and electricity.

Common misconception

Misconceptions associated with incomplete circuits: one wire to battery; connections to the same end of the battery; wires the wrong way round; not connecting clips to metal.

Children will be taught how to troubleshoot circuits which are not working to address these misconceptions.

Encourage children to be systematic when troubleshooting problems and to only change one thing at a time. Use a working circuit as a “test circuit” to check components which may not work. Ensure children rebuild problem circuits to include the original fault, before passing them onto another group.

Teacher tip

Equipment

Components for simple electric circuits: cells, wires, bulbs in holders, buzzers and motors.

Content guidance

Risk assessment required - equipment

Supervision

Adult supervision required

Licence

This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).