The inverse of electric conductance, measured in siemens (S), is resistance, which is expressed in ohms (Ω). Conductance and resistance are reciprocals of each other, meaning that if conductance increases, resistance decreases, and vice versa. The discussion highlights the importance of understanding these relationships in electrical experiments. Participants emphasize the simplicity of the concept while encouraging direct research for clarity. Overall, the thread provides a clear explanation of the relationship between conductance and resistance.