Here is the question:
What I did in my attempt solve this is I substituted a lot of variables into one equation, but I still wasn't able to solve the problem. My equation was Farad = C/V = (EoA)^2k/Qd^2. I feel like I just went in a complete circle. Anyone know where I went wrong, or a different approach to solve this? Thanks in advance!Many computer keyboards operate on the principle of capacitance. Each key forms a small parallel-plate capacitor whose separation is reduced when the key id depressed. Suppose the plates for each key have an area of 46.9 mm^2 and an initial separation of 0.550 mm. In addition, let the dielectric have a dielectric constant of 3.75. If the circuitry of the computer can detect a change in capacitance of 0.379 pF, what is the minimum distance a key must be depressed to be detected?