Question

Find the capacitance between the inner & outer curved conductor surface as shown in figure

• A. 6.86 PF
• B. 1.86 PF
• C. 3.26 PF
• D. 12.63 PF

Answer 1

Answer: (A)

6.86 PF

Answer 2

dc =

all small discs are in parallel

∴ C_eq = dc =

= R$\int _ { \theta = 0 } ^ { \frac { \pi } { 6 } } d \theta$

= $\frac { \pi } { 6 }$ ×