A disk of radius r= 70 cm has a uniform surface charge density o= 70.3 nC. Calculate the electric field ( in units of kN/C) at point P that lies along the central perpendicular axis of the disk and a distance 30 cm from the center of the disk. use ke = 9x109 N-m2/C2 Select one: O A. 1.56 O B. 4.82 O C. 1.20 O D. 2.41

A disk of radius r= 70 cm has a uniform surface charge density o= 70.3 nC. Calculate the electric field ( in units of kN/C) at point P that lies along the central perpendicular axis of the disk and a distance 30 cm from the center of the disk. use ke = 9x109 N-m2/C2 Select one: O A. 1.56 O B. 4.82 O C. 1.20 O D. 2.41

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter25: Gauss’s Law

Section: Chapter Questions

Problem 49PQ

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

A disk of radius r= 70 cm has a uniform surface charge density o= 70.3 nC. Calculate the electric field ( in units of kN/C) at
point P that lies along the central perpendicular axis of the disk and a distance 30 cm from the center of the disk. use ke =
9x109 N-m2/C2
Select one:
O A. 1.56
O B. 4.82
O C. 1.20
OD. 2.41

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