Chapter 8 Charge and Current Flashcards
What is the definition of current?
The rate of flow of charge
What two factors can increase the current flowing through a wire?
a greater number of electrons moving past a given point each second
the same number of electrons moving faster through the metal
What is the conservation of charge?
The conservation of charge states that the electric charge can neither be created nor destroyed and that the total charge in the universe remains constant
What is Kirchhoff’s first law
For any point in an electrical circuit, the sum of the currents into that point is equal to the sum of the currents out of that point.
What is the definition of mean drift velocity?
The average velocity attained by charged particles in a material due to an electric field.
What is the number density of a material defined as?
The number of free electrons per cubic meter of material.
