The reciprocal of resistivity ρ is called
AConductivity (σ = 1/ρ)
BConductance
CPermittivity
DCapacitance
Answer & Solution
Correct answer: A. Conductivity (σ = 1/ρ)
σ = 1/ρ — units S·m⁻¹ (siemens per metre). 'Conductance' G = 1/R, distinct from conductivity.
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