Kevin Nash
Last Activity: 11 Years ago
Sol. Here we should consider two spherical capacitor of capacitance
cab and cbc in series
Cab = 4πε base 0abk/(b - a) Cbc = 4πε base 0bc/(c - b)
1/C = 1/Cab + 1/Cbc = (b - a)/4πε base 0abk + (c - b)/4πε base 0bc = c(b - a) + ka(c - b)/k4πε base 0abc
C = 4πε base 0kabc/c(b - a) + ka(c - b)