Question

how many points inside an equilateral triangle is possible where electric field is zero. if q charge is placed at the vertices of triangle​

Answer 1

how many points inside an equilateral triangle is possible where electric field is zero. if q charge is placed at the vertices of triangle

HERE IS YOUR ANSWER DEAR

Answer 2

Answer:

The electric field will be zero

Explanation:

Electric field due to +Q charges of edge B at the center is ->

E=$\frac{1}{4pieb} * \frac{Q}{r^{2} }$

Same as due to charges of edge A and C

As shown $(E_{a} +E_{b} +E_{c} )$

Resultant of  $E_{b}$ and $E_{c}$

$E_{R} = \sqrt[]{E_{b}^{2}+E_{c}^{2}+2E_{b}E_{c}Cos(120) }$

$\sqrt[]{E_{b}^{2}+E_{c}^{2}+2E_{b}E_{c}(-\frac{1}{2}) }$

$=\sqrt{E_{b}^{2} } = E_{b}$

$E_{R} =E_{b}$

And both $E_{b}$ and $E_{a}$ are equal in magnitude and in the opposite directions so the electric field at o is Zero

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