Final answer:
In a stiff voltage divider, the load resistance should be at least 10 times higher than the voltage divider resistance, and often a factor of 100 or greater is recommended for stability.
Step-by-step explanation:
On a stiff voltage divider, the load resistance is typically much higher than the resistance of the voltage divider itself. A 'stiff' voltage divider is one where the resistance of the voltage divider is much lower than the load resistance connected to it. This ensures that the output voltage remains stable and less affected by the load. To achieve this, the load resistance should be at least 10 times higher than the combined resistance of the voltage divider resistors. However, for a more stable voltage division, a factor of 100 or greater is often recommended.