A professional electric steam iron is constructed with a metal soleplate and protective outer metal shield.
Explain why it would be hazardous to the user if the live wire inside the mains cable became loose and came into contact with this metal soleplate.
The steam iron has a power output of 2.30 kW2.30\text{ kW}2.30 kW. When connected to the mains, the potential difference is 230 V230\text{ V}230 V. Calculate the current in the iron during operation.
The steam iron is used to heat a reservoir of water from 15 ∘C15\ ^\circ\text{C}15 ∘C to 90 ∘C90\ ^\circ\text{C}90 ∘C.
The power output of the iron is 2.30 kW2.30\text{ kW}2.30 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 the steam iron can heat in 63 seconds63\text{ seconds}63 seconds.
Practise AQA GCSE Physics Domestic uses and safety with exam-style questions for Foundation and Higher tier. 13 questions covering Direct and alternating potential difference and Mains electricity, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.