Two pith balls hang side by side close to each other without touching as shown in the figure below. They are both neutral to begin with.

A plastic rod is rubbed with wool. Describe as negative, positive or neutral the total (net) charge of a system consisting of the rod and the cloth. Explain your reasoning.

A student touches sphere A briefly with the rod and then removes it. What is the charge state of A? Same as the rod or opposite charge of the rod?

Then he brings the rod close to sphere A but does not touch it. What will happen to A? Explain your reasoning.

Now sphere B is brought very close to A but does not touch it. What will happen to the spheres? Explain your reasoning.

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Expert Solution

genius_generous answered 1 year ago

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