Calculate potential at the center of the charge distribution

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Reference no: EM13524721

1. You are given a spherically symmetric volume charge distribution located in free space, with ρ = 3r² for r < a, and ρ = 0 for r > a.

(a) Use Φ(r) = to calculate the potential at the center of the charge distribution.

(b) Now calculate the electric field E from Gauss' law and then obtain the potential at the center of the charge distribution by evaluating

where the limits range from ∞ to 0.

2. Consider a thin wire carrying a uniform charge per unit length of λ (C/cm), and placed near two conducting planes, as shown. Calculate the magnitude and direction of the electrical force on unit length of wire.

786_Calculate the potential at the center2.png

3. Consider a point charge q at distance r from a conducting sphere of radius a. The sphere is at potential V. Find the value and the location of the two charges that, when placed within the region occupied by the sphere, will, together with the external point charge q, produce potential V at the surface of the sphere and a potential Φ that satisfies Poisson's equation in the region outside the sphere.

490_Calculate the potential at the center3.png

Reference no: EM13524721

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