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‘mho’ is the unit of ______ of a substance.
1. conductance
2. resistivity
3. conductivity
4. resistance

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Correct Answer - Option 1 : conductance

The correct answer is conductance.

  • 'Mho' is the unit conductance, while siemens is the SI unit of conductance.
  • Conductance - It is the measure of how freely the free electrons(charge carrier) can flow.
  • It is the reciprocal of electrical resistance, given by G.
  • Conductance, G = \(I \over V\)

  • Resistivity - It is the measure of electrical resistance offered by a material. It is given by rho (ρ).
    • Resistivity, ρ = \(RA\over l\), where R is resistance, A is area of cross-section, l = length of wire.
  • Conductivity - The ability of a material to conduct electricity. It is the reciprocal of resistivity.
    • Conductivity = \(l\over RA\)
  • Resistance - Property of a material to resist the flow of charge carriers. It is given by R.
    • R = \(V\over I\)(Ohm's law), also R = \(ρl\over A\)

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