15889760
Description
Quiz by Jeffrey Piggott, updated more than 1 year ago
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Created by Jeffrey Piggott
over 5 years ago
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Question 1
Question
Three charged balls, P, Q and R are suspended by insulating threads. Ball P is negatively charged. (See diagram)
What are the charges on ball Q and on ball R?
Image:
Q1 (binary/octet-stream)
Answer
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A ball Q = positive; ball R = positive
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B ball Q = positive; ball R = negative
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C ball Q = negative; ball R = positive
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B ball Q = negative; ball R = negative
Question 2
Question
Which copper wire would have the smallest resistance?
Answer
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A a long, thick wire
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B a long, thin wire
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C a short, thick wire
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D a short, thin wire
Question 3
Question
In which unit is potential difference measured?
Answer
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A ampere
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B ohm
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C volt
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D watt
Question 4
Question
Which material is a conductor of electricity?
Answer
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A brass
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B glass
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C plastic
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D wood
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