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Question
In the diagram shown, a positively charged rod is brought near the knob of an uncharged electroscope. The leaves will :
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Solution
The correct option is B diverge and will be positively charged
An electroscope is a device used to detect the presence of charge and it's relative amount. If a charged object is brought near the top of the electroscope, the leaves at the bottom spread apart. The greater the charge, the farther apart they move. When a positively charged object is brought near the knob, the electrons in the leaves move towards the other end being attracted by the rod. Thus the leaves lack electrons and both become positively charged and thus push each other apart.Hence correct answer is option B.
An electroscope is a device used to detect the presence of charge and it's relative amount. If a charged object is brought near the top of the electroscope, the leaves at the bottom spread apart. The greater the charge, the farther apart they move. When a positively charged object is brought near the knob, the electrons in the leaves move towards the other end being attracted by the rod. Thus the leaves lack electrons and both become positively charged and thus push each other apart.
Hence correct answer is option B.
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