the total thickness of a string is 2 cm if it is wound on a pencil 20 times. What is the the thickness of the string?
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Explanation:
Number of turns of wire = 20
Total width of turns of wire 2 cm
Diameter of the wire ?
Diameter of the wire = Total width of turns of wire / Number of turns of wire
= 2/20
= 0.1 cm
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