3. Assuming that a cloud of electrons confined in a region between two spheres of radii 2 and 5 cm has a -3x 10- charge density of -cos²p C /m³ .Find the total charge contained in the region.(15 minutes)

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Coulomb’s Law

Coulomb's law states that the attraction or repulsion force between two charged things is proportional to the product of their charges and inversely proportional to the square of their distance. It has an effect along the line that connects the two-point charges.