What charge would be required to electrify the sphere of radius 25 centimetre so as to get a surface charge density 3 by 5 centimetre cube?
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The electric charge density on surface will be per unit area and not centimeter cube... We assume it is a metal sphere. So all the charge remains on the surface only.
R = 25 cm.
density = Q /(4 π R²) = 3/5 C/cm²
Q = 3/5 * 4 * π * 25² = 1500π Coul.
R = 25 cm.
density = Q /(4 π R²) = 3/5 C/cm²
Q = 3/5 * 4 * π * 25² = 1500π Coul.
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