Question

b) A piece of wire is wound around a pencil 50 times. If the total width
of all the turns is 5 cm find the diameter of the wire.​

Answer 1

Explanation:

i cm= 10 mm

so, 50 cm= 50X10 mm

                =500mm

no. of times it is wound around = 50

so, thickness of each turn/ thickness of wire = total thickness/no. of turns

                                                                            = 500/500

                                                                             = 1mm or 0.1 cm.

So, the thickness of wire is o.1 cm or 1 mm