Question

Which of the following statement(s) about electrical charges are correct? HINT: More than one answer may be correct. You will receive partial credit for every correct answer and 1/10 of a point off for every incorrect choice Charged and neutral extended objects do not interact Extended objects of opposite charge can both repel and attract Extended objects of the same charge can both repel and attract Point charges of opposite charge only attract Point charges of the same charge only attract Point charges of the same charge only repel Extended objects of the same charge can only attract Point charges of opposite charge only repel Extended objects of opposite charge can only attract Charged and neutral extended objects can attract Extended objects of the same charge can only repel

Answer 1

Two-point charges of same charge repel each other and the of opposite sign attract each other. Hence, the statements (4) and (6) are correct. The extended objects of opposite charge can only attract each other. Hence, the statement (9) is correct. The extended objects of same charge can both attract and repel. This is due to the induction between the extended charged objects. Hence, the statement (3) is correct. Due to the induction, there is an attraction between the charged and extended neutral objects. Hence, the statement (10) is correct. Therefore, the correct statements about the electric charges are (3), (4), (6), (9), and (10).