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State whether the following is true or false.
A ceramic that conducts heat well must also conduct electricity well.

  • A.False
  • B.True only at large scales
  • C.False only at small scales
  • D.True

Answer: A

In a metal both are carried by electrons and go together, but in a ceramic heat can travel by lattice vibrations while charge does not move at all. Aluminium nitride and silicon carbide are practical demonstrations of the point.

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