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1) This document discusses the electric field and potential of a spherical capacitor consisting of two concentric spherical shells of radii r1 and r2 with equal and opposite surface charges. 2) Outside of r2, the field contributions of the two charge distributions cancel each other out, resulting in a field-free region. 3) An example is given of calculating the time taken for sparks to appear on the dome of a van de Graaff generator of radius 1m charging at a rate of 1μA, given the critical electric field

Author

Eddie

Language

EN