A disk of radius r= 70 cm has a uniform surface charge density \( \sigma \)= 65.4 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 = 9x10° N-m?/C2 %3D

A disk of radius r= 70 cm has a uniform surface charge density \( \sigma \)= 65.4 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 = 9x10° N-m?/C2 %3D

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter19: Electric Forces And Electric Fields

Section: Chapter Questions

Problem 73P: Two infinite, nonconducting sheets of charge are parallel to each other as shown in Figure P19.73....

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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 \( \sigma \)= 65.4 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 =
9x10° N-m?/C2
Select one:
O A. 4.86
B. 2.24
O C. 4.48
D. 1.45
O E. 1.12

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