P23_010 - 10 The individual magnitudes ¯ ¯ ¯ ~ E 1 ¯ ¯ ¯ and ¯ ¯ ¯ ~ E 2 ¯ ¯ ¯ are figured from Eq 23-3 where the absolute value signs

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 10. The individual magnitudes ¯ ¯ ¯ ~ E 1 ¯ ¯ ¯ and ¯ ¯ ¯ ~ E 2 ¯ ¯ ¯ are figured from Eq. 23-3, where the absolute value signs for q 2 are unnecessary since this charge is positive. Whether we add the magnitudes or subtract them depends on if ~ E 1 is in the same, or opposite, direction as ~ E 2 . At points left of q 1 (on the − x axis) the fields point in opposite directions, but there is no possibility of cancellation (zero net field) since ¯ ¯ ¯ ~ E 1 ¯ ¯ ¯ is everywhere bigger than ¯ ¯ ¯ ~ E 2 ¯ ¯ ¯ in this region. In the region between the charges (0 < x < d ) both fields point leftward and there is no possibility of cancellation. At points to the right of q 2 (where x > d ), ~ E 1 points leftward and ~ E 2 points rightward so the net field in this range is ~ E net = ¯ ¯ ¯ ~ E 2 ¯ ¯ ¯ − ¯ ¯ ¯ ~ E 1 ¯ ¯ ¯ in the ˆ i direction . Although | q 1 | > q 2 there is the possibility of ~ E net = 0 since these points are closer to q 2 than to q 1 ....
View Full Document

This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

Ask a homework question - tutors are online