A balloon carries a charge of 8.36×10-7 C. How far away from it must you be in order to find an electric field

As Joe M already said: There is always an electrical field around such a charge distribution (your balloon!), however the


field strength decreases with distance via a square - law:





E = 1/(4 pi * e0) * q / r^2 ( its r^2, not just r!!!)





e0 = 8,85 * 10^(-12) Vs/Am is a constant





Unless your are not located away infinitely from the balloon you will always find an electric field, however a very weak one!





@David





What did I say else? Look a the formula and you will see I have stated it correctly!

A balloon carries a charge of 8.36×10-7 C. How far away from it must you be in order to find an electric field
I hate to disagree with a Masters Degree in Physics but the energy of the field decreases as an inverse square!
Reply:The formula for electric field is:





E=(k q)/r


k=the constants of the equation


q is the charge of the particle


r is the distance from the charged particle.





There is an electric field everywhere from a charge particle. It gets weaker the further away you go. But it is always there.