Is a comb an insulator or a conductor?
Most plastic combs (like for combing your hair) would be
classified as insulators.
All materials conduct, however, the amount of voltage (i.e.
electrical pressure) required to make a material conduct generally
cause us to classify materials as either:
1. Conductors (e.g. copper, gold)
2. Insulators (e.g. air, mica, glass, teflon -
http://en.wikipedia.org/wiki/Electrical_insulation )
3. Semi-conductors (e.g. Silicon (Si) and germanium (Ge) )