The correct answer is: D. resistance
In the force-voltage analogy, the spring constant is analogous to the resistance. The spring constant is a measure of how difficult it is to stretch or compress a spring. The resistance is a measure of how difficult it is to pass current through a conductor.
In both cases, the greater the value, the more difficult it is to change the state of the system. For example, a spring with a high spring constant will be more difficult to stretch or compress than a spring with a low spring constant. Similarly, a conductor with a high resistance will be more difficult to pass current through than a conductor with a low resistance.
The other options are incorrect because they do not accurately reflect the relationship between the spring constant and the resistance.
- Capacitance is a measure of how much charge a capacitor can store. It is not analogous to the spring constant because the spring constant does not measure how much energy a spring can store.
- The reciprocal of capacitance is not analogous to the spring constant because the reciprocal of capacitance is a measure of how much current a capacitor can pass. The spring constant does not measure how much current a spring can pass.
- Current is a measure of the rate of flow of charge. It is not analogous to the spring constant because the spring constant does not measure the rate of flow of charge.