Red H.

asked • 06/22/17

Find the distance of 4th Q ?

There are given 3 source charges Q1= Q, Q2=Q and Q3= 2Q. Q3 is on top of triangle and Q1 and Q2 on bottom. The distance of q1=q2=q3= X
where to place 4th Q in way electric field equals to 0 ?

Arturo O.

At what point do you want the field to be zero?  You can add an extra charge that will make the field zero at some point, but not necessarily zero everywhere else.  Also, is the triangle equilateral?  
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06/22/17

Red H.

@Arturo  triangle is equilateral yes, and field will be 0 at center of triangle. Thank you ! 
 
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06/22/17

1 Expert Answer

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Arturo O. answered • 06/22/17

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