Electricity and Electrostatics Review

This flashcard tests the definition of a unit of charge based on Coulomb's Law as presented in the lecture transcript.

According to the lecture notes, how is one coulomb of charge defined in terms of the force exerted between equal and similar charges in a vacuum or air?

One coulomb is the charge which repels equal and similar charges placed at a distance of one meter from it in vaccum or air with a force of $9 \times 10^9\,N$.