Register to reply

Electric charge of a thin rod

by rasanders22
Tags: charge, electric
Share this thread:
rasanders22
#1
Feb15-11, 10:20 PM
P: 8
Electric charge is distributed uniformly along a thin rod of length a, with total charge Q. Take the potential to be zero at infinity. Find the potential at the following points: P is distance x from (0,0) which is the right side of the rod.

Find the potential at the point P, a distance to the right of the rod.
already answered

In part A, what does your result reduce to as x becomes much larger than a?
answer from A.
Q/a4pi(e0)(ln(x+a)-ln(x)

So as x becomes larger than a, (moves toward infinity)V should reduce to zero. The ln's should cancel eachother out, leaving you to multiply by 0. Except 0 is not excepted.
Ive tried
KQ(ln(x)-ln(x))
0
KQ0
According to the software, the answer depends on x, and does not depent on a.
Phys.Org News Partner Science news on Phys.org
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100

Register to reply

Related Discussions
Charge Q is distributed uniformly over a thin rod... Introductory Physics Homework 2
Why static charge created electric field while moving charge creates both electric an General Physics 0
Thin Long Rod, (Charge Density) Advanced Physics Homework 3
Thin Rod + Poncual Charge... Find Vb-Va Advanced Physics Homework 2
Thin, Bent Rod, Continuous Charge Introductory Physics Homework 19