1 Electricity, generating electricity, making use of energy and domestic electricity

Practice questions on Electricity, generating electricity, making use of energy and domestic electricity

• A sound wave travelling through air has a frequency of 440 Hz and a wavelength of 0.75 m. … (4 marks, Explain)
• A student sets up a circuit with a battery and a single lamp. The student then adds a seco… (4 marks, Describe and Explain)
• A student has a circuit containing a battery and a single resistor. The student replaces t… (4 marks, Explain)
• A coal-fired power station burns coal to generate electricity. Explain how burning coal ev… (4 marks, Explain)
• A student uses an electric fan heater to warm a room. Explain why the efficiency of the fa… (4 marks, Explain)
• Explain why adding more identical resistors in series to a circuit causes the current in t… (4 marks, Explain)
• A student connects two identical lamps in parallel across a battery. Explain how the curre… (4 marks, Explain)
• A washing machine transfers electrical energy to wash clothes. Describe the useful energy … (4 marks, Describe)
• A student uses a joulemeter to investigate the energy used by two identical resistors conn… (4 marks, Explain)
• Explain why electricity is transmitted across the National Grid at very high voltages rath… (4 marks, Explain)
• A hydroelectric power station uses water stored in a reservoir to generate electricity. Ex… (4 marks, Explain)
• A wind farm is connected to the National Grid. Describe how electricity generated by the w… (4 marks, Describe and Explain)
• A tidal power station uses the movement of seawater to generate electricity. Explain how a… (4 marks, Explain)
• A household uses several electrical appliances every day. Explain why the kilowatt-hour is… (4 marks, Explain)
• A cyclist wants to improve the efficiency of their bicycle. Explain how lubrication can im… (4 marks, Explain)
• A student places a hot drink in a polystyrene cup and notices it stays warm for much longe… (4 marks, Explain)
• A student uses an electric toaster to make toast. The toaster has a power-rating of 900 W.… (4 marks, Explain)
• A tumble dryer has a power-rating of 2.5 kW. It is used for 2 hours each day. Explain how … (4 marks, Explain)
• A family is trying to reduce their electricity bill. They compare two electric heaters tha… (4 marks, Explain)
• A household has two lighting options: traditional filament bulbs with a power-rating of 60… (4 marks, Explain)