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Paper 2 · November 2021 · Measurement and Units

Twenty turns of wire are wound closely together around a pencil so that the length spanning the turns is 25 mm. Calculate the thickness of the wire.

A25 mm

B0,8 mm

C12,5 mm

D1,25 mm

Explanation

Thickness = length AB / number of turns = 25 mm / 20 = 1,25 mm.

Derived from ZIMSEC Physics Paper 2, November 2021, Q1

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