Electric Circuits
A cube of material of side 1 cm has a resistance of 0.002 Ω between its opposite faces. If the same volume of the material has a length of 4 cm and a uniform cross - section, the resistance of this length will be

  0.128 Ω.
 0.064 Ω.
  0.032 Ω.
 0.016 Ω.

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Electric Circuits
Pure metal generally have

  low conductivity and high temperature coefficient.
  low conductivity and zero temperature coefficient.
  high conductivity and large temperature coefficient.
  high conductivity and low temperature coefficient.

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