Question on: WAEC Physics - 1989
A short chain is usual attached to the back of a petrol tanker trailing behind it to ensure that the
A
petrol tanker is balanced on the wh eel
B
heat generated by friction in the engine can be conducted to the floor
C
charges generated by friction in the tanker can be conducted to the earth
D
the tanker moves slowly as the chain touches the floor
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Correct Option: C
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