Question

Conductance is the reciprocal of
(A) Resistance
(B) Capacitance
(C) Inductance
(D) Charge

Answer 1

Hint: Conductance finds its mention when we talk about electrical current and its flow through a given material. It is also known as electrical conductance. It is defined as the potential for the substance to conduct electricity that is how easily electrical current can move.

Complete step by step answer:
We know resistance is defined as the opposition to the flow of the current through the material. It tells us how difficult it is for current to pass and to measure the resistance between any points in a conductor we can use the ohm’s law. The resistance of an object is represented as the ratio of the voltage across something to the current passing through it.
Now we talk about conductance, it tells us how easily the electric current passes through the conductor and that is just opposite of the resistance.
Hence, Conductance is the inverse (or reciprocal) of electrical resistance, represented as 1/R. So, the correct option is (A).
Additional information:
Conductance can be calculated by using ohm’s law first to find the resistance and then taking reciprocal of it. Another way to calculate conductance is by calculating it from conductivity. Conductivity attributes to the ability of a material to transfer energy and is one of the characteristic properties which is used to describe the electromagnetic properties of materials.

Note: The SI unit of resistance is Ohms and the SI unit of conductance is mho inverse or Siemens (S). Since, $$R={\displaystyle \frac{V}{i}}$$
Conductance will be $$G={\displaystyle \frac{1}{R}}={\displaystyle \frac{i}{V}}$$
Conductance is expressed as G.