what will happen to the leaves of an electroscope if a positively charged body is brought near a)an uncharged electroscope
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Similar to the results of a negatively charged rod, if a positively charged rod is brought near the knob of a neutral electroscope, it will attract some electrons up from the leaves onto the knob.
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If the charge is positive, electrons in the metal of the electroscope are attracted to the charge and move upward out of the leaves. This causes the leaves to have a temporary positive charge and because like charges repel, the leaves separate.
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