0:00
Hi.
00:01
So here in this question we have given three point charges where 5 nanoculum lies at y equals to 5 cm.
00:09
Y equals to minus 5 cm, there is charge of minus 10 nanoculum and 15 nanoculum charge at x squared to minus 5 cm.
00:18
And we have to find out xy coordinates at 20 nanoculum which produces the zero electric field.
00:26
Now with the charges thus configured the electric field, at origin will be superposition of the individual charge fields.
01:17
Hence, we will get electric field e0 will be equal to 1 divided by 4 pi epsilon not, multiplied by 15 divided by 5 square, a x minus 5 divided by 5 square, a y, minus 10 divided by 5 squared, a y, minus 10 divided by 5 square, a .y, which will be equal to 1 divided by 4 pi epsilon 0, 3 by 5 multiplied by a x minus a .y, newton column per meter.
02:14
Now similarly, the field e20 associated to 20 nanoculum charge must exactly cancel this electric field e0...