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The reciprocal of resistance is :

Asked in Re-NEET 2022 · Ohm's law and resistivity

(1) conductance
(2) reactance
(3) mobility
(4) conductivity

Answer: (1) conductance

Step-by-step solution

Conductance G=1/R, measured in siemens (mho).

Its counterpart for the material is conductivity σ=1/ρ.

Why the other options are wrong

(2) Reactance is the opposition of an inductor or capacitor to AC, measured in ohms like resistance itself, not its reciprocal.
(3) Mobility is drift speed per unit field, μ=(v_d)/E, a property of the charge carriers.
(4) Conductivity is the reciprocal of resistivity, a property of the material, not of resistance.

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