Learning objective

Explain the necessity for the outer casing of electrical appliances to be either non-conductive (double-insulated) or earthed for safety.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

Cambridge IGCSE PhysicsElectricity and magnetismCore content

Study support

Understand this objective

Quick explanation

This point belongs to Electrical safety, especially Electrical safety outcomes.
You need to be able to explain the necessity for the outer casing of electrical appliances to be either non-conductive (double-insulated) or earthed for safety.
The key ideas to know are Explain.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Explain

Why it matters

This objective helps connect Electrical safety outcomes to exam-style questions, flashcards, and revision notes for Electrical safety.

Revision tools

Flashcards10 linked cards

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Practice Questions7 linked questions

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Paper 3Theory (Core)1 marks

Description

The outer casing of electrical appliances can be made from non-conductive materials or can be earthed to ensure safety.

a
State two methods of ensuring safety in electrical appliances.
Your answer
Aim for approximately 1 distinct marking point.
[1]

Revision notestopic notes

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