Part A: A small metal ball is given a negative charge, then brought near (I.e wi
ID: 3307760 • Letter: P
Question
Part A: A small metal ball is given a negative charge, then brought near (I.e within a few millimeters) to end A of the rod. What happens to end A of the rod when the ball approaches it closely for the first time?
Part B: After several contacts with the charged ball, how is the charge on the rod arranged?
Part C: How does end A of the rod react when the ball approaches it after it has already made several contacts with the rod, such that a fairly large charge has been deportation end A?
xMasteringPhysics: Ch 21 Hw 3 Course Home C ià Secure | https://session.masteringphysics.com/myct/itemview?assignmentProblemib = 89714519 K Ch 21 HW-Copy Charging an Insulator This problem explores the behavior of charge on realistic (i.e. non-ideal) insulators. We take as an example a long insulating rod suspended by insulating wires. Assume that the rod is initially electrically neutral. For convenience, we will refer to the left end of the rod as end A, and the right end of the rod as end B (Figure t). In the answer options for this problem, "weakly attracted/repelled" means "attracted/repelled with a force of magnitude similar to that which would exist between two balls, one of which is charged, and the other acquires a small induced charge" An attractive/repulsive force greater than this should be classified as 'strongly attractedirepelled"
Explanation / Answer
Part A) When a small metal ball is given a negative charge and brought near (I.e within a few millimeters) to end A of the rod, the rod get Weakly attracted because a positive charge get induced on end A which give rise to the weak attraction as charges can not flow through an insulator..
Part B) After several contacts with the charged ball, The ball will deposit a negative charge at end A. But as the charge flow is prohibited in an insulator, the negative charge will stay there only and not spread out over the entire rod: So our answer is negative charge on end A with end B remaining neutral
Part C) As negative charge get deposited on end A after several contacts with the metal ball so the ball get strongly repelled.