The capacitance of a parallel-plate capacitor is increased by making the area of the plates
Answer Details
The capacitance of a parallel-plate capacitor is directly proportional to the area of the plates and inversely proportional to the distance between the plates. This means that by increasing the area of the plates, the capacitance of the capacitor will increase. This can be seen from the capacitance equation, which is given as C = εA/d, where C is the capacitance, ε is the permittivity of the dielectric material between the plates, A is the area of the plates, and d is the distance between the plates. Thus, the larger the area of the plates, the larger the capacitance of the capacitor. Therefore, the correct option is: large and their separation small.