Electricity & EquipmentQuestion 406 of 484

Which statement most accurately describes a conductor versus an insulator in the context of salon electrical safety?

a.Rubber and dry wood are conductors; copper and water are insulators
b.Copper, water, and the human body are conductors; rubber, dry wood, and silk are insulators
c.All metals are insulators because they resist current
d.Only gold is a true conductor; everything else is an insulator

Explanation

A conductor is a material through which electric current flows readily; an insulator resists current flow. Copper wiring carries current in tools; water and the moist human body conduct electricity, which is exactly why GFCI protection is required where water and electricity meet. Rubber, dry wood, glass, and silk insulate, which is why tool handles are rubber and the technician should stand on a dry floor. California regulates safe equipment use under CCR Title 16 §979.2. Option A reverses the categories. Option C is the opposite of physical reality. Option D treats conductivity as binary; it is a continuum and copper is the practical workhorse conductor.

Law Reference: CCR Title 16 §979.2

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