Learning objective
Describe how fields can be used to determine charge-to-mass ratio.
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Topic
The discovery of the electron
Subtopic
Specific charge of the electron
Aqa A Level PhysicsTurning points in physics
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Quick explanation
Describe how fields can be used to determine charge-to-mass ratio
- This point belongs to The discovery of the electron, especially Specific charge of the electron.
- You need to be able to describe how fields can be used to determine charge-to-mass ratio.
- The key ideas to know are charge-to-mass ratio.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
charge-to-mass ratio
Why it matters
This objective helps connect Specific charge of the electron to exam-style questions, flashcards, and revision notes for The discovery of the electron.
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Open revision notesRelated learning objectives
- Describe observations from cathode ray experiments.
Cathode rays
- Explain evidence that cathode rays contain charged particles.
Cathode rays
- Interpret deflection by electric and magnetic fields.
Cathode rays
- Link cathode ray evidence to discovery of the electron.
Cathode rays
- Describe thermionic emission.
Thermionic emission of electrons