Let’s solve each part step by step. ### **Conductance (G)** Conductance is the reciprocal of resistance: \[ G = \frac{1}{R} \] where: - \( G \) = conductance in siemens (S) - \( R \) = resistance in ohms (Ω) --- ### **(a) \( R = 120\,\Omega \)** \[ G = \frac{1}{120} \] \[ G = 0.00833\,\text{S} \] Or, in millisiemens: \[ G = 8.33\,\text{mS} \] --- ### **(b) \( R = 4\,k\Omega = 4000\,\Omega \)** \[ G = \frac{1}{4000} \] \[ G = 0.00025\,\text{S} \] Or, in microsiemens: \[ G = 250\,\mu\text{S} \] --- ### **(c) \( R = 2.2\,M\Omega = 2,200,000\,\Omega \)** \[ G = \frac{1}{2,200,000} \] \[ G \approx 0.0000004545\,\text{S} \] Or, in microsiemens: \[ G \approx 0.4545\,\mu\text{S} \] --- ### **(d) Comparison** - **120 Ω:** Highest conductance (\(8.33\,\text{mS}\)) - **4 kΩ:** Much lower conductance (\(250\,\mu\text{S}\)), about **1/33rd** of the first. - **2.2 MΩ:** Extremely low conductance (\(0.4545\,\mu\text{S}\)), about **1/550th** of the second, and **1/18,333rd** of the first. **Conclusion:** As resistance increases, conductance decreases rapidly. 120Ω offers much less opposition to current (high conductance), while 2.2MΩ offers very high opposition (very low conductance). --- ### **Summary Table** | Resistance | Conductance (S) | Conductance (mS or µS) | |------------------|-----------------|------------------------| | 120 Ω | 0.00833 | 8.33 mS | | 4 kΩ | 0.00025 | 250 µS | | 2.2 MΩ | 0.0000004545 | 0.4545 µS |