Well now, I don't know !
Let's figure it out.
The charge on one electron is 1.60 x 10⁻¹⁹ Coulomb .
To get 3,500 Coulombs of charge, you'd need to
go around and collect
(3,500) / (1.60 x 10⁻¹⁹) electrons.
That's 2.19 x 10²² of the little fellas.
That's a big number. But what's REALLY amazing is the
mass and weight of that many electrons:
Mass: 1.989 x 10⁻⁵ gram
Weight: about 0.0000007 ounce !
That's not one electron. That's the whole 2.19 x 10²² uvvum
that it takes to hold 3,500 Coulombs of charge.