Which from the following is NOT a conductor

A. Aluminum
B. Gold
C. Graphite
D. All are conductors

Check Answer

The correct answer is C) Graphite.

Graphite is a form of carbon that is commonly used as a lubricant and in pencils, among other things. While graphite is a good electrical conductor in the plane of its layers, it is a poor conductor in the perpendicular direction, and is therefore considered a semiconductor rather than a true conductor. In contrast, both aluminum and gold are excellent conductors of electricity and are widely used in electrical wiring and circuitry.
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