Physics
JAMB 2008
A short chain is sometimes attached to the back of a petrol tanker to?
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A.
generate more friction
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B.
ensure the balancing of the tanker
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C.
caution the driver when overspeeding
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D.
conduct excess charges to the earth
Correct Answer: Option D
Explanation
The friction between the tanker and air creates charges which the chain conducts to the ground.
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