A disk of radius 30 cm carries a uniform charge density ?. (a) Compare the approximation E?=

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A disk of radius 30 cm carries a uniform charge density ?.

(a) Compare the approximation E?= 2?k??with the exact expression (Equation 23-11) for the electric field on the axis of the disk by computing the fractional difference ?E/E?? x/??x²+R² for the distances x = 0.1, x = 0.2, and x = 3 cm.

(b) At what distance is the neglected term 1% of 2?k? ?

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Fundamentals of Ethics for Scientists and Engineers

ISBN: 978-0195134889

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Authors: Edmund G. Seebauer, Robert L. Barry

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Question Posted: Jul 20, 2011 07:32 PM

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A disk of radius 30 cm carries a uniform charge density ?. (a) Compare the approximation E?=

Question:

E = 2nko -2Tkσ 1 х 23-11 Vx2 + R?

Step by Step Answer:

a Evaluate E E x x 2 R 2 for x 01 02 a...View the full answer

Fundamentals of Ethics for Scientists and Engineers

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