Which of the following statements best expresses Kirchhoff’s junction rule?
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits
Problem
Which of the following statements best expresses Kirchhoff’s junction rule?
(a) In a series circuit, the current through each resistor is inversely proportional to its resistance.
(b) Around any closed loop in a circuit, the algebraic sum of potential differences is zero at every instant.
(c) At any junction in an electric circuit, the total current entering equals the total current leaving at every instant.
(d) The net charge entering a junction during any one-second interval is always zero, regardless of circuit conditions.