The Capacitance of a Circular Annulus
- 1 December 1951
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 22 (12) , 1499-1501
- https://doi.org/10.1063/1.1699900
Abstract
Two formulas are derived for the capacitance of a flat circular annulus. The first has an accuracy of 1 part in 1000 or better when the ratio of the external to the internal radius lies between 1.1 and ∞ and is exact at ∞. The second, C=34.96R/ln(32R/c) μμf, has an accuracy of 1 part in 1000 when the ratio lies between 1.000 and 1.1 and is exact at 1.000. In this formula c is the difference of the radii and R their mean value in meters. An approximate expression for the charge density is given in the first case.This publication has 4 references indexed in Scilit:
- Calculation of the Capacitance of a Circular Annulus by the Method of SubareasTransactions of the American Institute of Electrical Engineers, 1951
- The Power Interruption Testing of Lightning ArrestersTransactions of the American Institute of Electrical Engineers, 1951
- Dirichlet's Principle for a Flat RingProceedings of the London Mathematical Society, 1930
- Problems relating to a thin plane annulusProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1922