What law states that the algebraic sum of the voltage sources and voltage drops in a closed circuit must equal zero?

A) Kirchhoff's voltage law
B) Kirchhoff's current law
C) Thevenin's voltage law
D) Norton's current law

Kirchhoff's voltage law states that the sum of the electrical potential differences (voltage) around any closed network is zero. This means that the total amount of voltage provided by sources is exactly balanced by the total amount of voltage drops across other components within the loop.