There is a weight associated with the electrons needed to convey information, but it’s negligible.
Beyond that though, we’re not actually so interested in moving the electrons, but in toggling the electric field. Most of the electrons in the wire stay in the wire, and any that leave are balanced by another coming in on the other end. Electrons can move between the atoms, but if your cable is actually changing the number then something has gone wrong, since laptops don’t typically ionize copper.
It’s a pretty straightforward calculation, since amperage is the number of electrons per second, and the cables has a well documented signaling rate.
It works out to a bit weighing about 2x10^-22 grams for a USB cable.
There is a weight associated with the electrons needed to convey information, but it’s negligible.
Beyond that though, we’re not actually so interested in moving the electrons, but in toggling the electric field. Most of the electrons in the wire stay in the wire, and any that leave are balanced by another coming in on the other end. Electrons can move between the atoms, but if your cable is actually changing the number then something has gone wrong, since laptops don’t typically ionize copper.
It’s a pretty straightforward calculation, since amperage is the number of electrons per second, and the cables has a well documented signaling rate.
It works out to a bit weighing about 2x10^-22 grams for a USB cable.