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homework5-spring

# homework5-spring - They are separated by two dielectric...

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ECE 107: Homework 5 (Due Friday May 4). x y y=-d/2 y=d/2 Q -Q 1) An electric dipole consists of two equal and opposite point charges Q and –Q which are a distance d apart (see Fig.). (1) Find the electric field along the x axis in the figure. (2) Find the electric field vector along the y axis. (3) How does the electric filed strength behave at distances x >> d and y >> d away from the dipole? How does this behavior compare to that of a single point charge? 2) Shown to the right is a structure formed of two conducting spheres of radii a and c.

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Unformatted text preview: They are separated by two dielectric layers. One dielectric ε 1 extending from r=a to r=b in spherical coordinates, and a second ε 2 from r=b to r=c. If the charge on the inner sphere is Q and the charge on the outer sphere is –Q , calculate the D and E fields as a function of radius. 3) 4.33 For each of the distributions of the electric potential V shown in Fig. 4-30 scetch the corresponding distribution of E (in all cases, the vertical axis is in volts and the horizontal axis is in meters. 4) 5) 6) 7)...
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homework5-spring - They are separated by two dielectric...

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