Edexcel IGCSE Physics 2 24p Producing Electrostatic Charge Questions

Electrostatic charging involves electrons moving between objects. Losing electrons leaves an object positive; gaining electrons makes it negative. Protons do not move between objects.

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