Physics, 07.08.2021 14:00 sherifour

Let two concentric spheres O be uniformly charged. The radii of the two spheres are R1 and R2 respectively (R2>R1). The charge on the inside is q and the charge on the outside is Q . a. Calculate the electric field strength at a point r at a distance r from the center of O (know R1 < r < R2)
b. Calculate the potential difference between the two spheres

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