For a disk of radius R = 21 cm and Q = 9 x 10-6 C, calculate the electric field 1 cm from the center of the disk using all three formulas below. Note: €0 = 8.85e-12 c?/(N-M²).

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Chapter25: Gauss’s Law
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Problem 43PQ: The nonuniform charge density of a solid insulating sphere of radius R is given by = cr2 (r R),...
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For a disk of radius R = 21 cm and Q = 9 x 10-6 C, calculate the electric field 1 cm from the center of the disk using all three formulas below. Note: €0 = 8.85e-12 C2/(N•M²).
QIA
(a) Most accurate approximation: E =
2€0
N/C
(R2 +
QIA
2e0 L
(b) Less accurate approximation: E =
N/C
QIA
(c) Least accurate approximation: E =
260
N/C
Transcribed Image Text:For a disk of radius R = 21 cm and Q = 9 x 10-6 C, calculate the electric field 1 cm from the center of the disk using all three formulas below. Note: €0 = 8.85e-12 C2/(N•M²). QIA (a) Most accurate approximation: E = 2€0 N/C (R2 + QIA 2e0 L (b) Less accurate approximation: E = N/C QIA (c) Least accurate approximation: E = 260 N/C
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