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JAMB Physics 2005 Question 2

Question 2

Electrostatics

Which of the following materials is a conductor?

  1. A.Plastic
  2. B.Sodium
  3. C.Wax
  4. D.Glass
Show the answer and explanation

Answer: B (Sodium)

Explanation

Sodium is a metal with free electrons, so it conducts; plastic, wax and glass are insulators.