Electricity Quiz – Printable Version
20 multiple-choice questions with an explained answer key, ready to print.
Print the sheet (or save it as a PDF from the print window), hand it out, then mark it together using the answer page: every answer is explained. Perfect for a party, a birthday, a classroom, a care home or a team activity.
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- What is the unit of measurement for electric current intensity?
- A. The watt
- B. The ampere
- C. The joule
- D. The volt
- Which Italian scientist invented the first electric battery?
- A. James Clerk Maxwell
- B. Thomas Edison
- C. Michael Faraday
- D. Alessandro Volta
- Which British physicist discovered electromagnetic induction?
- A. Michael Faraday
- B. Marie Curie
- C. Isaac Newton
- D. Albert Einstein
- What type of current is produced by an electric battery?
- A. Alternating current
- B. Pulsed current
- C. Three-phase current
- D. Direct current
- Which safety device automatically cuts off power in the event of an overload?
- A. The transformer
- B. The circuit breaker
- C. The capacitor
- D. The generator
- Which physical quantity represents the amount of electric charge transported?
- A. Frequency
- B. Voltage
- C. Electric charge
- D. Power
- Which renewable energy source uses wind power to generate electricity?
- A. Tidal energy
- B. Solar energy
- C. Geothermal energy
- D. Wind energy
- Which English physicist formulated the equations describing all electromagnetic phenomena?
- A. Robert Boyle
- B. Isaac Newton
- C. James Clerk Maxwell
- D. Ernest Rutherford
- In honor of which French physicist was the unit of electric current intensity, the ampere, named?
- A. Léon Foucault
- B. Blaise Pascal
- C. André-Marie Ampère
- D. Pierre Curie
- What do Kirchhoff's laws describe in electricity?
- A. The propagation speed of light
- B. The conservation of current at a node and of voltage in a closed loop
- C. The resistance of a material depending on its temperature
- D. The maximum capacity of a capacitor
- What is the main function of an electrical transformer?
- A. Change the level of an alternating voltage through electromagnetic induction
- B. Measure the frequency of a current
- C. Store energy long-term
- D. Convert light into electricity
- What electrical quantity does a capacitor store?
- A. A resistance
- B. A current
- C. A frequency
- D. An electric charge
- How many phases does a typical industrial 'three-phase' electrical installation have?
- A. One
- B. Three
- C. Four
- D. Two
- Which unit measures the amount of electric charge?
- A. The siemens
- B. The farad
- C. The coulomb
- D. The henry
- What is the main household application of the Joule effect?
- A. Battery charging
- B. Data transmission
- C. Electric heating
- D. LED lighting
- What is the main purpose of a printed circuit board (PCB) in an electronic device?
- A. Store energy like a battery
- B. Produce electricity through a chemical reaction
- C. Mechanically and electrically connect the components together
- D. Amplify only the audio signal
- What does the 'IP' rating on an electrical device, for example IP65, guarantee?
- A. Its maximum power
- B. Its level of protection against dust and water
- C. Its year of manufacture
- D. Its standby consumption
- On an electricity contract, what does the 'subscribed power', expressed in kVA, represent?
- A. The maximum power you can use at the same time without tripping the meter
- B. The amount of electricity used in a year
- C. The mains voltage
- D. The number of sockets in the home
- Roughly what share of electricity produced in France comes from nuclear power?
- A. About 10%
- B. About 35%
- C. About 65 to 70%
- D. Over 95%
- Which region of Europe suffered a huge blackout on 28 April 2025, plunging almost all of Spain and Portugal into darkness?
- A. Scandinavia
- B. The Balkans
- C. The British Isles
- D. The Iberian Peninsula
Answer key — Electricity Quiz
- B. The ampereThe ampere (A) measures the rate of electric charge flowing through a conductor; it honors physicist André-Marie Ampère.
- D. Alessandro VoltaIn 1800, Alessandro Volta invented the 'voltaic pile', the first device to generate continuous electric current in history.
- A. Michael FaradayIn 1831, Michael Faraday demonstrated that a changing magnetic field can generate an electric current, the founding principle of generators and transformers.
- D. Direct currentA battery delivers direct current, meaning it always flows in the same direction, unlike the alternating current of the household grid.
- B. The circuit breakerThe circuit breaker automatically interrupts the circuit when it detects abnormally high current, protecting the installation from overloads and short circuits.
- C. Electric chargeElectric charge, expressed in coulombs, quantifies the amount of electricity moved by a current over a given time.
- D. Wind energyWind turbines convert the kinetic energy of the wind into electricity using blades connected to a generator.
- C. James Clerk MaxwellIn the 1860s, James Clerk Maxwell formulated a set of equations unifying electricity, magnetism, and light, the foundation of modern electromagnetism.
- C. André-Marie AmpèreAndré-Marie Ampère, considered one of the founders of electrodynamics, gave his name to the unit of measurement for electric current intensity.
- B. The conservation of current at a node and of voltage in a closed loopFormulated by Gustav Kirchhoff in 1845, these two laws allow complex circuits to be analyzed based on the conservation of current at each node and of voltage in each loop.
- A. Change the level of an alternating voltage through electromagnetic inductionA transformer uses two magnetically coupled coils to step up or step down an alternating voltage, a principle essential to transmitting electricity over long distances.
- D. An electric chargeA capacitor accumulates electric charge between two plates separated by an insulator, and its ability to store this charge is measured in farads.
- B. ThreeA three-phase system uses three alternating currents shifted by 120°, allowing more power to be transmitted and efficiently powering industrial motors.
- C. The coulombThe coulomb (C) measures the amount of electric charge; it is named after French physicist Charles-Augustin de Coulomb, who studied electrostatic forces.
- C. Electric heatingHeaters, toasters, and kettles rely on the Joule effect: current passing through a resistor produces heat by dissipating energy.
- C. Mechanically and electrically connect the components togetherA printed circuit board is an insulating plate etched with conductive tracks that connect electronic components according to the circuit's design.
- B. Its level of protection against dust and waterThe first digit concerns solids (dust), the second liquids. The higher they are, the more resistant the device: a bathroom or outdoor light needs one.
- A. The maximum power you can use at the same time without tripping the meterOven, washing machine and heating on together? If their total exceeds this limit, the main breaker cuts everything off.
- C. About 65 to 70%With 56 reactors, France is one of the most nuclear-reliant countries in the world.
- D. The Iberian PeninsulaTrains stopped, traffic lights out, phones down: power took hours to return.