Question

The units of conductance are:
(This question has multiple correct options)
$A.$ $ohm$
$B.$ $oh{m^{ - 1}}$
$C.$ $mho$
$D.$ $siemens$

Answer 1

Before solving this question we have to get an idea about the conductance. Conductance is the degree to which an object conducts electricity and can be calculated as the ratio of the current which flows to the potential difference present.

Complete answer: As we know the conductance is the degree to which an object conducts electricity. It is represented by the letter $G$, Conductance is the reciprocal of resistance. There are many $SI$ units of conductance $Siemens$ , $oh{m^{ - 1}}$ and $mho$ . $Siemens$ Unit is named after Ernst Werner von Siemens, unit $oh{m^{ - 1}}$is derived from its definition as it is reciprocal of resistance and we know the unit of resistance is $ohm$ . The $SI$ unit is used universally in science and often in electrical.

Additional information: Resistance: Resistance is defined as the measure of the opposition to current flow in an electric circuit. It is measured in $ohm$ . The name of the unit $ohm$ is named after George Simon Ohm, a German physicist who studied the relationship between voltage, current and resistance.

Therefore, the correct options are B,C\ &D;.

Note: It is to be noted that there are many factors affecting the conductance namely, temperature, nature of ions, concentration of ions and size of electrodes.
Temperature:$1\%$ increase in temperature causes $2\%$ increase in conductance,
Concentration of ions: Conductance is directly proportional to the concentration of ions as the number of ions increases conductance is also increased.
Size of electrodes: Conductance is directly proportional to the cross sectional area, that is if we increase the area of electrodes conductance is also increased.