- #1
laminatedevildoll
- 211
- 0
Question:
Assume the chrages to be on the z axis with the midway between them. Find the potential exactly for a field point on the z axis.
Okay, so I found the potential which is v = k*p/(z^2-0.25*l^2)
k is the constant 1/4*pi*epsilon, l stands for the length between the two point charges
The next part of the question asks
How large must z be in order that one can approximate the exact potential on the z axis with the dipole term to an accuracy of 1 percent?
The answer is supposed to be z > 5l, but I don't understand what the question is asking me to do...
Assume the chrages to be on the z axis with the midway between them. Find the potential exactly for a field point on the z axis.
Okay, so I found the potential which is v = k*p/(z^2-0.25*l^2)
k is the constant 1/4*pi*epsilon, l stands for the length between the two point charges
The next part of the question asks
How large must z be in order that one can approximate the exact potential on the z axis with the dipole term to an accuracy of 1 percent?
The answer is supposed to be z > 5l, but I don't understand what the question is asking me to do...