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For a disk of radius R = 21 cm and Q = 2 x 10-6 C, calculate the electric field 5 cm from the center of the disk using all three formulas below. Note: to 8.85e-12 C²/(N-M2). (a) Most accurate approximation: E- (b) Less accurate approximation: E= QIA 2/4 [1 - (R² +22,1/2] 200 QIA 20 (c) Least accurate approximation: E- QIA 200 - 哥 N/C N/C N/C

For a disk of radius R = 21 cm and Q = 2 x 10-6 C, calculate the electric field 5 cm from the center of the disk using all three formulas below. Note: to 8.85e-12 C²/(N-M2). (a) Most accurate approximation: E- (b) Less accurate approximation: E= QIA 2/4 [1 - (R² +22,1/2] 200 QIA 20 (c) Least accurate approximation: E- QIA 200 - 哥 N/C N/C N/C

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For a disk of radius R = 21 cm and Q = 2 x 10-6 C, calculate the electric field 5 cm from the center of the disk using all three formulas below. Note: to 8.85e-12 C²/(N-M²). (a) Most accurate approximation: E- (b) Less accurate approximation: E= (c) Least accurate approximation: E QIA 240 [¹- (R² +22)1/2] [1 QIA 1-² 20 QIA 200 (d) How good are the approximate formulas at this distance? This answer has not been graded yet. N/C N/C N/C (e) At what distance does the least accurate approximation for the electric field give a result that is closest to the most accurate? at a distance R close to the disk far from the disk at a distance R/2
Transcribed Image Text:For a disk of radius R = 21 cm and Q = 2 x 10-6 C, calculate the electric field 5 cm from the center of the disk using all three formulas below. Note: to 8.85e-12 C²/(N-M²). (a) Most accurate approximation: E- (b) Less accurate approximation: E= (c) Least accurate approximation: E QIA 240 [¹- (R² +22)1/2] [1 QIA 1-² 20 QIA 200 (d) How good are the approximate formulas at this distance? This answer has not been graded yet. N/C N/C N/C (e) At what distance does the least accurate approximation for the electric field give a result that is closest to the most accurate? at a distance R close to the disk far from the disk at a distance R/2
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