Tutopiya: Study Resources for IGCSE, IB, GCSE & A-Levels

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6 MCQs

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1
When two insulators are rubbed, what transfers?
Answer & explanation
Correct: option C
Only electrons are mobile at GCSE.
2
An insulator gains electrons. Its overall charge becomes:
Answer & explanation
Correct: option B
Extra negative electrons → net negative charge.
3
Two positively charged rods are placed close together. They will:
Answer & explanation
Correct: option B
Like charges repel.
4
Why doesn't a metal rod become statically charged when rubbed?
Answer & explanation
Correct: option B
Conductors let charge flow away instantly.
5
What causes a static spark?
Answer & explanation
Correct: option B
Large p.d. across an air gap ionises air, which then conducts briefly.
6
Why must fuel tanker drivers earth their vehicles before refuelling?
Answer & explanation
Correct: option B
Static built up during driving could spark and ignite vapour.