AQA•GCSE•Physics
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Electricity
Current, circuits, resistance, domestic electricity, power and static electricity
Practice 59 subtopics in Electricity. All questions match the AQA GCSE specification.
About Electricity
Electricity is a key topic in the AQA GCSE Physicsspecification. This topic covers current, circuits, resistance, domestic electricity, power and static electricity.
Master all 59 subtopics below with unlimited AI-generated questions. Each subtopic page includes sample questions and the ability to generate unlimited practice questions with detailed solutions.
All Subtopics (59)
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Random Practice
Practice any subtopic from Electricity
Circuit symbols (cell, battery, switch, resistor, variable resistor, lamp, fuse, voltmeter, ammeter, diode, LED, thermistor, LDR, motor)Drawing and interpreting circuit diagramsElectric current as flow of chargeCharge calculation (Q = It)Electrons as charge carriers in metalsCurrent in circuits (same everywhere in series)Potential difference (voltage)Resistance and its effect on currentOhm's law (V = IR)Calculating resistanceRequired Practical 3: Investigating resistanceFactors affecting resistance (length, cross-sectional area, material)Ohmic conductors (constant resistance)Non-ohmic conductors (changing resistance)Required Practical 4: I-V characteristicsI-V graph for resistor (straight line through origin)I-V graph for filament lamp (curved)I-V graph for diode (one direction only)Thermistors (resistance decreases as temperature increases)Light-dependent resistors (resistance decreases as light intensity increases)Applications of thermistors and LDRsSeries circuit rulesCurrent the same throughout series circuitTotal potential difference shared between componentsAdding resistances in series (Rtotal = R1 + R2)Parallel circuit rulesPotential difference same across parallel branchesCurrent splits at junctionsTotal current is sum of currents through branchesTotal resistance less than smallest individual resistor (H)Calculating resistance in parallel (1/Rt = 1/R1 + 1/R2) (H)Direct current (dc) and alternating current (ac)UK mains supply (230V, 50Hz)Frequency and potential difference of acThree-wire cable (live, neutral, earth)Live wire (brown) carries alternating potentialNeutral wire (blue) completes circuitEarth wire (green/yellow) safety wireWhy the live wire is dangerousFuses and circuit breakersEarth wire and fuse protectionElectrical power (P = IV)Power in terms of resistance (P = I²R)Power in terms of resistance (P = V²/R)Energy transfer in appliancesCalculating energy transferred (E = Pt)Calculating energy transferred (E = QV)Work done by electrical transfer (E = IVt)Structure of the National GridStep-up transformersStep-down transformersWhy high voltage transmission is efficientReducing power loss in transmission (P = I²R)Static electricity from frictionElectron transfer between materialsPositive and negative chargesLike charges repel, unlike attractElectric fields around charges (T)Sparking and electrostatic discharge (T)
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Start with Circuit symbols (cell, battery, switch, resistor, variable resistor, lamp, fuse, voltmeter, ammeter, diode, LED, thermistor, LDR, motor)