Quiz2solutions

# Quiz2solutions - PHY2049 Quiz 2 on chapter 23 1 As...

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PHY2049 Quiz 2 on chapter 23 1. As illustrated in the Figure below, an electric field is produced on the axis of a uniformly charged ring of radius a and total charge Q , at point P a distance x away from the center of the ring. If the charge Q is then spread uniformly into a disk of the same radius at the same location, the electric field at point P a distance x away from the center of this disk will be a) less than for the ring, b) greater than for the ring, c) the same as for the ring, or d) impossible to determine. (b). As demonstrated in Example 23.8, the electric field on the axis of the ring is due to the charge elements of the ring, all a distance r from point P . In order to visualize the situation, one could approximate the infinite number of infinitesimal charge elements as a finite number of charge elements that add up to the total charge Q . For example, if there were 1000 charge elements, each element would have the same charge of Q /1000. If one were to flatten the ring into a disk and in essence fill up the hole in the ring, except for

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Quiz2solutions - PHY2049 Quiz 2 on chapter 23 1 As...

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