The Total solution for NCERT class 6-12
What is the area of the plates of a 2 Fparallel plate capacitor, given that the separation between the plates is 0.5cm? [You will realize from your answer why ordinary capacitors are in the rangeof µF or less. However, electrolytic capacitors do have a much largercapacitance (0.1 F) because of very minute separation between the conductors.]
Capacitance of a parallel capacitor, V =2 F
Distance between the two plates, d =0.5 cm = 0.5 × 10−2 m
Capacitance of a parallel plate capacitor is given by therelation,
Where
= Permittivity of free space = 8.85 ×10−12 C2 N−1 m−2
Hence, the area of the plates is too large.To avoid this situation, the capacitance is taken in the range of µF.