A small sphere, weighing 4.5 g, is suspended by an insulating thread between two parallel vertical plates, 4 cm apart, 4 cm apart. The plates are insulators and have uniform surface charge densities + δ and - δ . The charge on the sphere is q=4.5*10^-6C . Calculate the potential difference between the plates so that the wire is inclined at an angle of 50° to the vertical.

A small sphere, weighing 4.5 g, is suspended by an insulating thread between two parallel vertical plates, 4 cm apart, 4 cm apart. The plates are insulators and have uniform surface charge densities + δ and - δ . The charge on the sphere is q=4.5*10^-6C . Calculate the potential difference between the plates so that the wire is inclined at an angle of 50° to the vertical.

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