Determine the magnitude of an electric field at r=0.01 m from the center of non-conducting sphere with a radius of R=0.001m possessing a charge of 7C which evenly distributed throughout the sphere. (r>R).
Answer
Electric field is given by
E=kQr2=9∗109∗70.012=63∗1013N/mE=\frac{kQ}{r^2}\\=\frac{9*10^9*7}{0.01^2}\\=63*10^{13}N/mE=r2kQ=0.0129∗109∗7=63∗1013N/m
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