A workshop belt sander is connected to a UK mains electricity supply which has a potential difference of 230 V230\text{ V}230 V.
The current in the belt sander is 4.5 A4.5\text{ A}4.5 A. Calculate the power of the belt sander.
Use the equation: power=potential difference×current\text{power} = \text{potential difference} \times \text{current}power=potential difference×current
Calculate the energy transferred by the belt sander when 750 C750\text{ C}750 C of charge flows through it.
Use the equation: energy transferred=charge flow×potential difference\text{energy transferred} = \text{charge flow} \times \text{potential difference}energy transferred=charge flow×potential difference
During maintenance, the casing of the belt sander is removed, leaving a live wire exposed inside. Describe the difference between the hazard and the risk in this scenario for a technician attempting to repair the unit while it is plugged in.
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.