8/31/2017 CH19 HW Due: 11:59pm on Sunday, September 3,2017 You will receive no c

Question

8/31/2017 CH19 HW Due: 11:59pm on Sunday, September 3,2017 You will receive no credit for Items you complete after CH19 HW the assignment is due. Grading Peliar Charging an Insulator insulating wireson realistic (ü.e. non-ideal) insulators. We take as an example a long insulating rod suspend the rod as end A, and the right end of the rod as end B. In the answer options for this problem, "weakly attracted/repelled" means attracted/repelled 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 attr by insulating wires. Assume that the rod is initialy electrically neutral. For convenience, we will refer to ine with a force of magnitude similar to that which acted/repelled Part A A small metal ball is given a negative charge, then brought near (i.a, within a few millimeters) to and A of the rod. What happens to end A of the rod when the ball approaches it closely this first time? Select the expected behavior. You did not open hints for this part. ANSWER rtpr strongly repelled strongly attracted weakly attracted weakly repelled neither attracted nor repelled Now consider what happens when the small metal ball is repeatedly given a negative charge and then end A of the rod Part B Aher several contacts with the charged ball, how is the charge on the rod arranged? Select the best description. 19133

Explanation / Answer

A) Strongly repelled as the electron clouds on the rod will tend to repel the negatively charged particle.

B) Positive charge on End A due to induction of charge via polarisation.

C) weakly attracted as the charge is induced due to polarisation and induced charge gives less force.

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