Eduqas A-Level Physics Revision
Explore Eduqas A-Level Physics revision topics. Check the official specification for complete requirements for your exam year and route.
Course details
Assessment The assessment includes Component 2; see the official specification for the full structure.
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Reviewed course guidance
Revision points, with the explanation beside them
Open a point to read what to know, how to use it in an assessment, a plain-language explanation and a self-check. Answers stay hidden until you choose to reveal them.
Options and source
A2 Unit 4 Section B option
- Alternating Currents
- Medical Physics
- The Physics of Sports
- Energy and the Environment
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Topic group
Reviewed requirements
- Core
Open revision guidance
What to know
- In series, resistances add: Rtotal = R1 + R2 + …. In parallel, reciprocals add: 1/Rtotal = 1/R1 + 1/R2 + …. For two parallel resistors this can also be rearranged to Rtotal = R1R2/(R1+R2).
What to do in an assessment
- Check the arrangement before choosing a rule. A parallel equivalent resistance must be less than the smallest branch resistance; a series equivalent is greater than any individual resistance.
In plain language
Series resistors share one path; parallel resistors provide multiple paths, so their equivalent-resistance rules differ.
Self-check
Find the equivalent resistance of 3 Ω and 6 Ω in parallel.
Show the answer
R = (3×6)/(3+6) = 18/9 = 2 Ω, which is less than the smaller branch resistance.
Earlier topic checklist
These earlier topic ticks are separate from the reviewed points above and do not count towards that progress.
Physics topic list
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These ticks keep your earlier topic checklist. They do not count towards the new reviewed requirements above. Its numbering may be internal; use the linked references above for the exact reviewed source requirements.
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