A hollow conductor is positively charged. A small uncharged metal ball is lowered by a silk thread (insulating material) through a small opening in the top of the conductor and allowed to touch its inner surface. After the ball is removed, it will have: A. A positive charge B. A negative charge C. A charge whose sign depends on where the small hole is located in the conductor D. A charge whose sign depends on what part of the inner surface it touched E. No appreciable charge
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A hollow conductor is positively charged. A small uncharged metal ball is lowered by a silk thread (...
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