What this topic covers
Electricity has 1 subtopic:
- Current electricity
← Back to topics
AS Level AQA Physics · Topic 5 of 5
Electricity – AS Level AQA Physics revision notes
Choose a subtopic. Electricity covers Current electricity in AS Level AQA Physics. 8 lessons in 1 subtopic.
Revise Electricity for AS Level AQA Physics, including Current electricity. 8 lessons across 1 subtopic.
8
Lessons
1
Subtopics
Electricity lessons by subtopic
8 lessons, grouped by subtopic.
Current electricity
- Electric Current, Potential Difference, and Resistance
- Potential Dividers: Principles and Applications
- Resistivity and Temperature Effects
- Superconductivity and Applications
- I-V Characteristics: Ohmic Conductors and Ohm's Law
- I-V Characteristics: Semiconductor Diodes and Filament Lamps
- Electromotive Force (EMF) and Terminal Potential Difference
- Practical: Investigating EMF and Internal Resistance
Revise Right Mocks '26
AQA AS Physics mock draft, 26–31 Oct. Draft coverage: Physics AS Paper 1. Reviewed for an original-practice sitting; check student availability before registering. Marking and results will follow later, after separate approval. Eligible new accounts receive a five-day Pro trial when signup email verification completes. Previous trials keep their original expiry. After expiry, new papers need Pro unless you have an explicitly confirmed free sitting offer for this event. That offer adds no Pro time or AI learning. Saved attempts and released results remain readable. No card or automatic charge.
More in this course
Go back to the full AS Level AQA Physics topic list, or practise this topic with past-paper questions.
Frequently asked questions
What is Electricity?
Electricity covers Current electricity in AS Level AQA Physics. 8 lessons in 1 subtopic.
What is potential difference?
Potential difference is the work done per unit charge moved between two points in a circuit: V = W/Q, measured in volts, where 1 V = 1 J C⁻¹. The Electric Current, Potential Difference, and Resistance notes cover this in full.
How does a platinum resistance thermometer work?
A platinum resistance thermometer uses the resistance of a platinum wire to measure temperature precisely. The Resistivity and Temperature Effects notes cover this in full.
What is Ohm's law?
Ohm's law states that the current through an ohmic conductor is directly proportional to the potential difference across it, provided physical conditions, especially temperature, remain constant: V = IR with R constant. The I-V Characteristics: Ohmic Conductors and Ohm's Law notes cover this in full.
What is electric current?
Electric current is the rate of flow of electric charge: I = ΔQ/Δt, where ΔQ is the charge passing a point in coulombs and Δt is the time in seconds. The Electric Current, Potential Difference, and Resistance notes cover this in full.
What is EMF?
Electromotive force (EMF), ε, is the energy transferred per unit charge by a source: ε = E/Q, measured in volts, where 1 V = 1 J C⁻¹. The Electromotive Force (EMF) and Terminal Potential Difference notes cover this in full.
What is the potential divider equation?
The potential divider equation gives the output voltage across R₂ as output voltage = R₂/(R₁ + R₂) × supply voltage. The Potential Dividers: Principles and Applications notes cover this in full.
What is the unit of resistivity?
The SI unit of resistivity is the ohm-metre, Ω m. The Resistivity and Temperature Effects notes cover this in full.
What is resistance?
Resistance is the ratio of the potential difference across a component to the current through it: R = V/I, measured in ohms, where 1 Ω = 1 V A⁻¹. The Electric Current, Potential Difference, and Resistance notes cover this in full.