Elementary treatise on electricity and magnetism : (1905)
Foster, G. C. (George Carey), 1835-1919, Joubert, J. (Jules François), 1834-1910, Porter, Alfred W. (Alfred William), 1863-1939 · London ; New York ; Bombay : Longmans, Green, and Co. · leaf 68
ctric field bounded bytwo concentric spherical con-ducting surfaces. Let p (Fig. 23)be a point in the field at adistance, r, from the commoncentre, o, of the sphericalboundaries. If Q be the chargeon the inner surface, and there-fore - Q the charge on the outersurface, the electric force at P will… … Fig. 23. — acting in the 33] FORCE AND POTENTIAL 45 at r must be a quantity such that its rate of decrease is mostrapid in the direction op (or r), and is equal to -^ . —. Putting V for the potential at p, and V for the potential at a point p,distant r from the centre, the change of potential as we…
Electricity · Magnetism
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