What are the negative & positive charged bodies on the basis of electrons?

Could anyone answer, as much as possible,these Physics question on Electricity?

• 1. What happens when 2 initially charged (unlike charge) conducting bodies are connected by a wire? What determines the flow of the current? How long will it continue? 2. Does a storage cell store electricity? Why is it properly called a storage cell? 3. Why is the name dry cell give to the common battery used in flashlights and radios? 4. When a charge rod is brought near bits cork dust, the cork will at first cling to the rod. Very quickly thereafter, the bits of cork will fly off from the rod.Explain why this is true. 5. State some similarity between the gravitational and electric fields in the laws of force in these cases. PROBLEMS: 1. In an electric lamp 2.5 C pass through each second.How many electrons does this represent? How many statcoloumb? 2. 2 small glided pith balls carrying charges of +0.00257 and -0.00600 microcoloumb are 250 mm apart, in air. Compute for the force between them. 3. Compute for the electric field intensity at a point 50 cm from a charge of 2.5 microcoloumb? 4. What is the intensity of the electric field which will support a water droplet having a mass of 10 microgram and a charge of 1.0 * 10 ^-17 microcoloumb? 5. What is the electric field intensity at a reference point if a force of 40 N is necessary to hold a charge of 200 microcoloumb at this point?

• Answer:

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