Physics GCSE
fire alarms
What fire alarms means in Physics GCSE, as defined for AQA.
Definition of fire alarms
Check what you remember
Read the wording for your board, then hide it and explain fire alarms in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A sudden rise in temperature produces a sudden fall in resistance that triggers the alarm.
Topics that use fire alarms
- Resistors (AQA GCSE)
Related terms
- comparing at fixed pd
- constant resistance
- constant temperature
- decreasing gradient
- diode
- diodes
- direct proportionality
- filament lamp
Using fire alarms in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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