two point charges +q and +9q are seperated by a distance 10a find the point on the line joining the - Physics - Electric Charges And Fields

Question

two point charges +q and +9q are seperated by a distance 10a
find the point on the line joining the two charges where electric
field is zero?

Ajay · Accepted Answer

Hi Saamiad!
Let x be the point on the line joining the
charges +q and +9q, where electric intensity is zero Then,
E+q = 9×109×(q/x2)
E-q = 9×109×(9q/(10-x)2)
Given, E= 0
Therefore,
<img src=
"https://s3mn%20mnimgs%20com/img/shared/userimages/mn_images/image/e1%20png"
alt="">

two point charges +q and +9q are seperated by a distance 10a.find the point on the line joining the two charges where electric field is zero?