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Combined Science
Key terms
Electrical insulator

GCSE Combined Science · key term

Electrical insulator

Definition

A material with very high electrical resistance, used to prevent current flowing through unwanted paths.

Used by OCR

How each exam board covers it

OCR GCSE Combined Science A · J250

Specification P6.2i · Physics Paper 2

Covering it with an electrical insulator, such as plastic or rubber, separates the live conductor from people and other conducting objects. Its very high resistance prevents a dangerous current through the user during normal use.
Revise: Electrical Safety and Hazards

OCR Combined Science A past papers

Related key terms

Double insulation
Electric shock
Live wire
Potential difference

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Electrical insulator — OCR GCSE Combined Science A Definition