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Q: The SI unit of electrical resistivity is ………….
  • A. Ohm-meter
  • B. Ohm
  • C. Coulomb
  • D. Ampere
Correct Answer: Option A - The electrical resistivity of a substance indicates its ability to resist the flow of electric current by the substance. Low resistivity of materials allow electric charge to flow smoothly. Its SI unit is Ohm meter (Ωm).
A. The electrical resistivity of a substance indicates its ability to resist the flow of electric current by the substance. Low resistivity of materials allow electric charge to flow smoothly. Its SI unit is Ohm meter (Ωm).

Explanations:

The electrical resistivity of a substance indicates its ability to resist the flow of electric current by the substance. Low resistivity of materials allow electric charge to flow smoothly. Its SI unit is Ohm meter (Ωm).