Final answer:
The minimum value of Rₗₒₐ required to limit the impact on Vᵣₑ to less than a 10% variance depends on the circuit configuration, which is not provided in the question.
Step-by-step explanation:
The question pertains to ensuring that the voltage across a reference, denoted as Vᵣₑ, is not compromised by more than a 10% variance due to the load resistance, Rₗₒₐ. To determine the minimum value of Rₗₒₐ that would limit the impact on Vᵣₑ to no more than 10%, one would typically require more context about the circuit configuration, such as whether this is related to a voltage divider, a Wheatstone bridge, or another setup involving the Rₗₒₐ and its effects on voltage. For a standard voltage divider circuit, the minimum load resistance that allows for a maximum of a 10% change in voltage could be calculated by taking into account the internal resistance of the voltage source or the other resistive elements in the circuit. However, without specific circuit details or values, a precise numerical answer cannot be provided.