Four infinite, non-conducting, thin sheets are arranged as shown below. Sheet C

Question

Four infinite, non-conducting, thin sheets are arranged as shown below. Sheet C has a uniform surface charge density of +5 alpha. The other three sheets have uniform surface charge densities of -2 alpha -4 alpha , and +3 alpha in some unknown order. In order to determine which charge densities belong to which plates, you make two electric field measurements, at the points labelled 1 and 2. Taking right to be the positive direction, the electric fields at these two points are: E1 = 2 rho / epsipon 0 E2= 5 rho / epsilon 0. Place the surface charge densities on the plates in an arrangement that would result in the above measurements. Then, indicate the location at which the magnitude of the electric field is greatest. The magnitude of the electric field is greatest

Explanation / Answer

A=3 ; B= -4 ;C= -2

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