# Electrical Fields

## Homework Statement

Find the electrical field a distance of 2.09 ± 0.02 m from a charge of 1.82 ± 0.03 µC.
What is the uncertainty?

2. The attempt at a solution
I was able to answer part one correctly. Very easy. However, I am not sure of how to find the uncertainty

## Answers and Replies

Born2bwire
Science Advisor
Gold Member
What are the possible range of values that you can calculate for the electric field given the tolerance of your parameters?

ideasrule
Homework Helper
Do you know how to combine errors? If not, try this:

http://home.clara.net/rod.beavon/err_comb.htm [Broken]

Last edited by a moderator:
What are the possible range of values that you can calculate for the electric field given the tolerance of your parameters?

i dont understand what you mean

Born2bwire
Science Advisor
Gold Member
I don't know about ideasrule suggestion but if I wanted to find the error, then I would say that the mean value would be calculated off of the nominal values given. Then, given the tolerance on these nominal values, what is the largest and smallest possible electric field? This would be the limits of the deviation from your calculated nominal value.