Free GCSE Physics lesson: Static Electricity
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Free Lessons -> GCSE / Key Stage 4 -> Physics -> Static Electricity

Lesson 24 · GCSE / Key Stage 4 · Physics

Static electricity and electric fields

Explain charging by friction, attraction and repulsion, sparks and electric field patterns.

Qualification: GCSE Subject: Physics Static

Electricity

Lesson overview

This lesson introduces the core physics idea, the useful equipment and the calculation or data skills used on this page.

FocusStatic charge and electric fields
Time45-60 minutes
EquipmentBalloon, cloth and field-line diagram practice if available.
Practical linkNo separate practical method focus
Maths tagsM6 ratio and percentage

What you will learn

  • Explain charging by friction as electron transfer.
  • Describe attraction and repulsion between charges.
  • Explain sparks as movement of charge through air.
  • Represent electric fields using field lines.

Static charge examples supplied on this page

Use the balloon, hair, dust and spark examples to practise electron-transfer explanations.

Static electricity and electric fields infographic

Infographic explaining GCSE Physics static electricity and electric fields, including charge transfer by electrons, attraction and repulsion, electric field line directions, force with distance, sparking and the difference between static charge and current.
Use this visual to connect charge transfer, electric field direction, attraction, repulsion and sparking.Download visual

Clear explanation

Static electricity happens when insulating materials gain or lose electrons. The material gaining electrons becomes negatively charged; the material losing electrons becomes positively charged.

Like charges repel and unlike charges attract. Charged objects can also attract neutral objects by inducing charge separation.

A strong electric field can cause a spark when charge moves through the air, such as during lightning or a small shock from a charged object.

Key diagram

Electric field lines around positive and negative charges Electric field lines point away from a positive charge and towards a negative charge, with arrows showing field direction. + −
Diagram: the arrows make the convention visible: field direction is away from positive charge and towards negative charge.

Worked examples

Balloon charged by rubbing

A balloon is rubbed on a jumper.

Electrons move from one material to the other.

The balloon gains electrons.

Answer: The balloon becomes negatively charged if it gains electrons.

Quick checks

Choose an answer, then check your thinking.

1. What moves when objects become charged by friction?

2. What happens between two negative charges?

Practice questions

Question 1

A rod gains electrons. What charge does it have?

Reveal answer and marking guidance

Answer: Negative charge.

Marking: Credit electrons are negative.

Question 2

Why can a charged balloon stick to a neutral wall?

Reveal answer and marking guidance

Answer: It induces charge separation in the wall, causing attraction.

Marking: Credit induced separation and attraction.

Question 3

What is an electric field?

Reveal answer and marking guidance

Answer: A region where a charge experiences a force.

Marking: Credit force on charges in a region.

Question 4

Why can a spark jump across a small air gap?

Reveal answer and marking guidance

Answer: A strong electric field causes charge to move through the air.

Marking: Credit discharge through air.

Practice ladder

FluencyRecall the key definition, unit, equation or model before using the lesson questions.
ApplicationApply static charge and electric fields to an unfamiliar device, practical setup or data description.
Practical interpretationUse evidence, graph features, uncertainty, method quality or conclusion wording where the question asks you to evaluate.
Maths skillM6 ratio and percentage

Answers and marking guidance

The exact practice answers are hidden under each question so you can try first. For this lesson, marks come from using the correct physics model, choosing the right equation where needed, keeping units with values, and explaining changes with precise words such as transfer, resultant force, acceleration, evidence and uncertainty.

Common mistakes

  • Saying protons move between rubbed insulators.
  • Thinking neutral objects cannot be attracted.
  • Drawing field lines crossing each other.
  • Forgetting electron gain gives negative charge.

Extension challenge

Draw field lines around a positively charged sphere and explain the direction using a positive test charge.

Reveal answer

Example answer: A strong extension response names the physics model, uses accurate units and explains why the evidence supports the conclusion.

Exam-board guidance

Short board notes only. Learn the core physics above first.

AQA GCSE Physics

AQA GCSE Physics: often rewards clear physics explanations, correct equations, units and practical evidence for static charge and electric fields.

OCR GCSE Physics

OCR GCSE Physics: often values precise definitions, clear working, graph interpretation and links between models and evidence.

Pearson Edexcel GCSE Physics

Pearson Edexcel GCSE Physics: often combines the concept with equation use, data handling and practical interpretation.

Eduqas GCSE Physics

Eduqas GCSE Physics: learn the core explanation and practise applying it to unfamiliar contexts, data and practical questions.

WJEC Wales

WJEC Wales: often expects accurate terms, units and evidence-based explanations using the shared physics idea.

CCEA GCSE Physics

CCEA GCSE Physics: connect the idea to your current unit and use the same practical method language your class uses.

Next lesson

Next, continue with Final GCSE Physics Exam Routine.

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