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Q24. c) Distinguish between resistance and resistivity.d) Name two factors on which the resistivity of a substance depends and two factors on which it does not depend.
Q24. c) Distinguish between resistance and resistivity.d) Name two factors on which the resistivity of a substance depends and two factors on which it does not depend.
CBSE | Class 10 | Electricity | Lakhmir Singh | Physics
Q24. c) Distinguish between resistance and resistivity.d) Name two factors on which the resistivity of a substance depends and two factors on which it does not depend.

c) Following are the differences between resistance and resistivity:

  • Resistance is the property of the conductor whereas Resistivity is the property of the material used in the conductor .
  • In a conductor, resistance is defined as the opposing force to the flow of electric current whereas Resistivity is the opposing force of the flow of electric current in a rod such that the length of the rod is 1m and the cross-sectional area of the rod is 1m2 .
  • Parameters such as length, nature of the material used in a conductor, and thickness of the conductor determine the resistance whereas Parameters such as length and thickness do not determine the resistivity of the conductor.

d) Nature of the material and the temperature of the material determine the resistivity of a substance. Resistivity is independent of the length and the thickness of the conductor.

i

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