A negatively charged rod is brought close to(but not touching)an uncharged sphere.If the sphere is momentarily earthed and then the rod is removed,briefly explain what happens.
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When the negatively charged rod is brought near the sphere, positive charges are attracted to the rod while negative charges repelled. ... When the rod is removed, the positive charges in the sphere repel against themselves and distribute evenly in the sphere. ·...
These positively and negatively charged regions have been “induced” or “persuaded” to form because of the repulsive force between the negative rod and the free electrons in the sphere. If the rod were removed, the free electrons would return to their original places, and the charged regions would disappear.
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