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Two small insulating spheres with radius 6.00×10−2 m are separated by a large center-to-center distance of...

Two small insulating spheres with radius 6.00×10−2 m are separated by a large center-to-center distance of 0.600 m . One sphere is negatively charged, with net charge -1.05 μC , and the other sphere is positively charged, with net charge 3.30 μC. The charge is uniformly distributed within the volume of each sphere.

What is the magnitude E of the electric field midway between the spheres?

Take the permittivity of free space to be ϵ0 = 8.85×10−12 C2/(N⋅m2) .

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Answer #1

Electric field midway between the spheres,

E = E1 + E2

E = kq1 / r^2 + kq2 / r^2

E = 9*109 (1.05*10-6 + 3.30*10-6 ) / (0.60 / 2)2

E = 4.35*105 N/C

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