The slope of the graph of total current versus input voltage in experiment 1 can be converted to a resistance of

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The question asks to identify the resistance value that corresponds to the slope of the total current versus input voltage graph in experiment 1.
Option 1: 1.8 kΩ. This value would imply a relatively low slope, meaning the current increases more slowly with voltage. If the actual experimental slope is steeper, 1.8 kΩ would underestimate the resistance and thus be incorrect.
Option 2: 2.8 kΩ. This is the stated correct value for the slope-to-resistance conversion in the provided data. Since resistance is equal to V/I and the slope represents how voltage changes with current (or current with voltage, depending on the plot convention), this value reflects the proportionality observed in the experiment. If the slope translated to 2.8 kΩ, this option is consistent with the given answer in the problem.
Option 3: 1 Ω. This extremely low resistance would produce a very steep current increase with voltage, which is inconsistent with typical lab measurements for a circuit of this type. It would only be plausible if the voltages and currents were on a scale that demanded such a small resistance, which is unlikely here, making this choice incorrect.
In summary, the correct interpretation of the slope as a resistance yields 2.8 kΩ, while the other two options do not align with the experimental slope-to-resistance mapping or with plausible current–voltage relationships in the described setup.

LC Electrical Engineering 1 - 28604 Analogue Circuit Basics Lab (Lab 1) Quiz

The slope of the graph of total current versus input voltage in experiment 1 can be converted to a resistance of

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