Edexcel IGCSE Physics 2.27P Electrostatic dangers
Practise explaining electrostatic hazards in fuel, dust and metal systems and how earthing prevents charge build-up.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- explain how earthing lets charge flow to or from the ground before sparks form
- apply aircraft fuelling or flour mill contexts to reduce fire or explosion risk
2.27P Electrostatic dangers question 1
A student uses this apparatus to demonstrate the effect of electric charge.
He pours some fine powder into a funnel.
The fine powder moves through a length of plastic tubing and falls into a metal can.
The metal can rests on a metal cap.
The metal cap is connected to a thin piece of metal via a metal rod.
When the powder lands in the can, the thin piece of metal moves away from the metal rod.
The student suggests that this demonstration is similar to refuelling an aircraft.
The powder represents the fuel and the metal can represents the fuel tank in the aircraft.
Explain how the student should modify this apparatus to demonstrate how to minimise the dangers when refuelling an aircraft.
You may add to the diagram to help your answer.
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