Differential amplification
What Differential amplification means in Physics A-Level, as defined for AQA.
Definition of Differential amplification
Check what you remember
Read the wording for your board, then hide it and explain Differential amplification in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The output voltage is proportional to the difference between the input voltages, multiplied by the open-loop gain.
Topics that use Differential amplification
- The ideal operational amplifier (A-level only) (AQA A-Level)
Related terms
- Input and output connections
- Operational amplifier
- Ideal model
- Ideal op-amp assumptions
- Power supply rails and saturation
Using Differential amplification 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.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge