Answer:
- 4.4 x 10⁴ J
Explanation:
q = charge on each point charge = - 3.6 x 10⁻⁶ C
a = length of side of square = 4 m
L = length of diagonal of the square
Length of the diagonal of the square is given as
L = a √2
L = 4 √2
L = 5.66 m
Electrostatic potential energy is given as
[tex]U = \frac{4kq}{a} + \frac{2kq}{L}[/tex]
inserting the values
U = (4 (9 x 10⁹) (- 3.6 x 10⁻⁶)/4) + (2 (9 x 10⁹) (- 3.6 x 10⁻⁶)/5.66)
U = - 4.4 x 10⁴ J
