A ring of radius R = 4cm lies in the y-z plane and is centered at the origin. The ring carries a uniform charge Q = 48μC. A point P is located along the x-axis a distance x = 3.9 cm from the origin. The equation for electric potential at point P due to charge on the ring can be represented as V = (kQ)/(R2+x2)0.5.  Using the equation for electric potential as a function of x, derive an equation for the electric field along the positive x-axis. Give the answer in terms of the variables Q, R, x, and Coulomb constant k. Calculate the magnitude of the elctric field at point P in units of meganewtons per coulomb (MN/C)

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
Chapter20: Electric Potential And Capacitance
Section: Chapter Questions
Problem 23P
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A ring of radius R = 4cm lies in the y-z plane and is centered at the origin. The ring carries a uniform charge Q = 48μC. A point P is located along the x-axis a distance x = 3.9 cm from the origin. The equation for electric potential at point P due to charge on the ring can be represented as V = (kQ)/(R2+x2)0.5

Using the equation for electric potential as a function of x, derive an equation for the electric field along the positive x-axis. Give the answer in terms of the variables Q, R, x, and Coulomb constant k.

Calculate the magnitude of the elctric field at point P in units of meganewtons per coulomb (MN/C)

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