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Near one end of an electrically neutral aluminum rod lying on a table made of non-conducting...

Near one end of an electrically neutral aluminum rod lying on a table made of non-conducting material, you hold a comb that is also made of a non-conducting material but carries a positive charge. What does a small steel sphere located near the other end of the rod do if the sphere is electrically neutral? PLEASE EXPLAIN WHY!!

a. roll away from the rod

b. roll toward the rod

c. stay where it is

Science   Advanced-Physics   
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