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Multiple-Choice Homework Problem 3.9 Two infinite parallel planes of charge with

ID: 1405380 • Letter: M

Question

Multiple-Choice Homework Problem 3.9 Two infinite parallel planes of charge with uniform surface charge densities are parallel to the y 2 ane and equally spaced about the origin. The planes pass through the points ticm. The plane passing through +1cmit has surface charge density o. The plane passing through 1cm has surface charge density o. The planes are drawn to the right. Compute the electric field at the origin Select One of the Following: (d) -o/eo Multiple-Choice Homework Problem 3.10 he figures below show two concentric spherical shells. The inner shell has total charge -Q and the outer shell +2. Select the figure that correctly represents the electric field of the system. Select One of the Following (a) Figure (a) (b) Figure (b) (c) Figure (c) (d) Figure (d) (e) Figure (e) Figure (f)

Explanation / Answer

given,

two planes have surface charge density of 3/4 and -/4

electric field due to charged plate = charge density / (2 * e0)

electric field due to first plate = (3/4) / (2 * e0)

electric field due to second plate = (-/4) / (2 * e0)

net electric field = (3/4) / (2 * e0) + (-/4) / (2 * e0)

net electric field = /4e0