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(a) calculate the force between two small charged spheres having charges 0.4C and 0.02mC separated by 30cm in air.(b) what is the nature of the force ? (c) If a sheet of mica of relative permittivity 4fills the spacebetween the spheres what will be the force.? (d) If a sheet of iron of thickness10 cm.is introduced between the charges what will happen to the force between them?

Aditi Chauhan , 10 Years ago
Grade 10
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