Exam marking analysis: Electrostatics
Last updated: 15/11/2023
Contributor: Cecilia Astolfi
An exam-style question with exemplar answers for GCSE Physics or GCSE Combined Science students to analyse, to develop their understanding of what makes an effective GCSE exam question response.
Students review an exam question on electrostatics before identifying the strengths and weaknesses in example answers. They then write their own exam response with scaffolded prompts to help them.
An example task from the classroom resource:
Write a 6/6 mark response to this question:
Explain how a positively charged balloon can bend a thin stream of water.
Try to include the following points:
- A balloon is charged by friction — by rubbing it against another insulator.
- Electrons are transferred from one object to another.
- The object that gains electrons become negatively charged the balloon has lost electrons.
- Water is neutral and has both positive (protons) and negative charges (electrons) — opposite charges attract (same charges repel).
- Partial charge is induced in the water / charges in the water separate.
- The electrons in the water are attracted to the positively charged balloon.
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