Why Carbon Brushes are userd in Electric motors while carbon is insulator of electricity?

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Solution

Carbon, in the form of graphite, is a good conductor.
The atomic structure of carbon enables it to take different forms which have different properties.

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Similar questions

Match the following.

‘A’		‘B’
(a)	Carbon, zinc		1.	Armature
(b)	Copper, zinc		2.	Insulator
(c)	Electric motor		3.	Dry cell
(d)	Protection from electric current		4.	Simple cell

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