Answer to Question #153691 in Field Theory for abeera

Question

find electric field at center of square q=11.8 nC AND a=5.20cm

Answer 1

Answer

If chage q is at every corner of the squre then electric field at center can be given as

$\overrightarrow E_{net}=\overrightarrow E_1+\overrightarrow E_2+\overrightarrow E_3+\overrightarrow E_4$

All charge are equal in magnitude and at equal distance from center of square

So

$\overrightarrow E_1=-\overrightarrow E_2\\\overrightarrow E_3=-\overrightarrow E_4$

So

$E_{net}=0V/m$