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The capacitance of cylindrical capacitance depends upon length L of capacitor as-

Option: 1

L


Option: 2

L^2


Option: 3

\frac{1}{L}


Option: 4

none of these


Answers (1)

best_answer

Cylindrical capacitor-

It consists of two coaxial cylinders of radii a and b.

Assume that b>a.  

The capacitance of a cylindrical capacitor is, 

 C=\frac{Q}{V_{\alpha}-V_{a}}=\frac{Q}{V_{a}}=\frac{2 \pi \varepsilon_{0} L}{\ln \left(\frac{b}{a}\right)}

  

 

 

Posted by

Nehul

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