Question

⭐⭐⭐⭐⭐ PHYŚÏČŚ ĽÔVÈŘ. heya please solve​

Answer 1

Explanation:

Enet =k(4u)/(a/√2)^2+k(2u)/a/√2)^2+k(-4u)/a/√2)^2+k(-2u)/a/√2)^2

all will cancel out each other

Enet=0

Answer 2

let there be a positive charge at center.....

in the attached figure,

the center is having a positive charge,

so,

all positive charges at corners will repel w.r.t +q

and all negative charges at corners will attract towards center

HOPE IT HELPS!

$\huge\pink{♡}$$\huge\bold\red{thank you}$$\huge\pink{♡}$