A disk of radius r= 70 cm has a uniform surface charge density \( \sigma \)= 112.6 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: A. 8.36 B. 2.50 C. 1.93 D. 7.71 E. 3.86

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Q: A disk of radius r= 70 cm haS a uniform surface charge density o= 111.6 nC. Calculate the electric…

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A: Given: Number of protons = 82 Number of neutrons = 125

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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.