(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Consider a dipole:

a=50 cm

q1 = +2q on x axis

q2 = -5q on x axis

Point on x axis where E=0,

2. Relevant equations

+q1/4pi(eo)x^2 = -q2/4pi(eo)(a-x)^2,

3. The attempt at a solution

algebra =

x= 50/1+ (5/2)^1/2

x = 19.37 cm from +2q

this checks as the magnitudes of

=+2q/19.37^2 and -5q/30.63^2 are equal

The question i have :

In dipole diagrams the E field lines of force show a continuous field from

+q to -q

This appears to be in conflict with the above, that is, opposing E fields where E = 0

at 19.37 cm from +2q on x axis ?

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# Homework Help: Dipole electric field question

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