P23_024 - 24 We assume q > 0 Using the notation ╬ = q/L we note that the(in´Čünitesimal charge on an element dx of the rod contains charge dq = ╬

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

View Full Document Right Arrow Icon
24. We assume q> 0. Using the notation λ = q/L we note that the (infnitesimal) charge on an element dx oF the rod contains charge dq = λdx . By symmetry, we conclude that all horizontal feld components (due to the dq ’s) cancel and we need only “sum” (integrate) the vertical components. Symmetry also allows us to integrate these contributions over only halF the rod (0 x L/ 2) and then simply double the result. In that regard we note that sin θ = y/r where r = p x 2 + y 2 . Using Eq. 23-3 (with the 2 and
Background image of page 1
This is the end of the preview. Sign up to access the rest of the 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