A commercial espresso machine has a stainless steel outer body.
Explain why it would be hazardous for the live wire of the power cable to come loose and contact the stainless steel body.
The heating element of the espresso machine has a power rating of 2.88 kW2.88\text{ kW}2.88 kW. The machine is connected to a mains potential difference of 240 V240\text{ V}240 V. Calculate the electrical current drawn by the machine.
The espresso machine is used to heat a reservoir of water from 16 ∘C16\ ^\circ\text{C}16 ∘C to 96 ∘C96\ ^\circ\text{C}96 ∘C to prepare steam.
The power output of the heating element is 2.88 kW2.88\text{ kW}2.88 kW.
The specific heat capacity of water is 4200 J/kg ∘C4200\text{ J/kg}\ ^\circ\text{C}4200 J/kg ∘C.
Calculate the mass of water that can be heated through this temperature range in 35 seconds35\text{ seconds}35 seconds.
9 exam-style questions on AQA GCSE Physics 2.3 Domestic uses and safety, covering 2.3.1 Direct and alternating potential difference and 2.3.2 Mains electricity. Each one has a worked solution and a mark scheme showing where the marks go.