Each of two identical objects carries a net charge. The
Chapter 18, Problem 19.16(choose chapter or problem)
Each of two identical objects carries a net charge. The objects are made from conducting material. One object is attracted to a positively charged ebonite rod, and the other is repelled by the rod. After the objects are touched together, it is found that they are each repelled by the rod. What can be concluded about the initial charges on the objects? (a) Initially both objects are positive, with both charges having the same magnitude. (b) Initially both objects are negative, with both charges having the same magnitude. (c) Initially one object is positive and one is negative, with the negative charge having a greater magnitude than the positive charge. (d) Initially one object is positive and one is negative, with the positive charge having a greater magnitude than the negative charge.
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