Praxis 5005 Practice Test Practice Question
Which of the following materials provides the least electrical resistance?
Correct Answer: D
Rationale: Copper is a highly conductive metal, known for its excellent ability to allow electric current to flow with minimal resistance, making it ideal for electrical wiring. In contrast, plastic, oak, and rubber are all insulators or have significantly higher resistance. Plastic is commonly used to insulate wires, preventing current flow. Oak, a type of wood, also acts as an insulator and does not conduct electricity well. Rubber, like plastic, is used for insulation due to its high resistance. Thus, among the options, copper stands out as the best conductor with the least electrical resistance.
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