Forces between charged and uncharged objects
2 marks · NormalDescribe what happens when a student charges a comb by running it through their hair and then brings the comb near small pieces of paper.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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The pieces of paper are attracted to the charged comb and may jump up to touch it.
Also accept: The paper moves towards or sticks to the comb
Common mistakes: The comb repels the paper
Show mark scheme and worked solution
Marking points
B1 · 1 mark · States that the paper is attracted or moves towards the comb
B2 · 1 mark · Further correct detail, e.g. stating that the comb is charged or that the paper might jump up to the comb
Worked solution
When the charged comb is brought near the paper, the pieces of paper are attracted to the comb and may be lifted up.