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Can a metallic sphere of radius 1 cm hold a charge of 1 coulomb?
Wiki User
∙ 12y ago
Well I doubt it would be able to hold a charge of that density in air. When a sphere of radius 1cm is charged to such a high level, the electric field will be far larger than the dielectric strength of air. Hence, a breakdown voltage will be achieved and electrons will flow even through air. It's the same principle that lightning works on. 1 coulomb is a huge amount of charge, and the surface charge density in this case will be too high for air to take. So, a sphere of radius 1 cm cannot hold 1 Coulomb of charge.
Wiki User
∙ 12y ago
Yes, a metallic sphere of radius 1 cm can hold a charge of 1 coulomb. The amount of charge a conductor can hold is not dependent on its size but rather on its capacitance. For a spherical conductor, the capacitance (C) is directly proportional to the radius (r), so a larger radius would be able to hold more charge for the same potential difference.
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bidyogammes
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