Edexcel IGCSE Physics 2 24p Producing Electrostatic Charge Questions

Practise explaining how rubbing, contact or charging apparatus transfers electrons so objects become positively or negatively charged.

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

[Maximum number: 1]

A student uses this apparatus to demonstrate the effect of electric charge.

Figure for Question Edexcel IGCSE Physics 2 24p Producing Electrostatic Charge Questions question 1 — Edexcel IGCSE Physics

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 $-9.4 \times 10^{-9} \mathrm{C}$ .

Which statement is true for the metal can?

it gains negatively charged electrons

it loses negatively charged electrons

it gains positively charged electrons

it loses positively charged electrons

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Edexcel IGCSE Physics 2 24p Producing Electrostatic Charge Questions question 1