A Farad. Easy question

. A farad is the capacitance of a dielectric for which a potential difference of one volt results in a static charge of one coulomb. It has the base SI representation of s4 · A2 · m-2 · kg-1. Since an ampere is the rate of electrical flow (current) of one coulomb per second, an alternate definition is that a farad is one ampere-second of charge at one volt.

Why did he buy a gauage for it?