Edexcel IGCSE Physics 2.24P Producing electrostatic charge
Practise explaining how rubbing, contact or charging apparatus transfers electrons so objects become positively or negatively charged.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- explain positive charge as loss of electrons, rejecting proton movement
- choose whether a rod, can or droplet gains or loses electrons from its final charge
2.24P Producing electrostatic charge 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.
A coulombmeter measures electric charge.
The student connects a coulombmeter to the metal can.
When all the powder has landed in the can, the coulombmeter shows a reading of .
Which statement is true for the metal can?
A
it gains negatively charged electrons
B
it loses negatively charged electrons
C
it gains positively charged electrons
D
it loses positively charged electrons
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