Chapter 2, Problem 1RQ

The reciprocal of resistance is:

(a) voltage

(b) current

(c) conductance

(d) coulombs

To determine

Find the appropriate option that suits for reciprocal of resistance from given options.

Answer to Problem 1RQ

The reciprocal of resistance is “(c) conductance”.

Explanation of Solution

Discussion:

Resistance is defined as the capacity of an element to oppose the flow of electric current. It is denoted as R and its unit is ohm $\left(\Omega \right)$.

From Ohm’s law, the resistance is stated as the ratio of voltage to current that is $R=\frac{v}{i}$.

In a short circuit element, the resistance will be around 0 ohms and in an open circuit element, the resistance would be around infinity.

Conductance is defined as the ability of an element to allow the flow of electric current. It is denoted as G and its unit is mho or siemens (S).

Therefore, the resistance is inversely proportional to the conductance that is $R=\frac{1}{G}$.

Hence, the option c is correct and remaining options a, b and d are incorrect.

Conclusion:

Thus, the reciprocal of resistance is “(c) conductance”.