Charging by Contact and by Induction Each of two identical objects carries a net
ID: 2019886 • Letter: C
Question
Charging by Contact and by Induction 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 conclude 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 positive charge having a greater magnitude than the negative charge . (d) Initially one object is positive and one is negative with the negative charge having a greater magnitude than the negative charge .Explanation / Answer
D Initially one was negative and one was positive since one repelled and one attracted. But after they touched, the negative rod became positively charged so the charge on the positive charge must have been greater.