The algebraic sum of the changes of potential around any closed circuit loop is
A) zero.
B) maximum.
C) zero only if there are no sources of emf in the loop.
D) maximum if there are no sources of emf in the loop.
E) equal to the sum of the currents in the branches of the loop.

Question

Quizplus · Accepted Answer

According to Kirchhoff's voltage law, the algebraic sum of the changes of potential around any closed circuit loop must be zero. This is because the sum of the potential differences across all the circuit elements must equal the emf of any sources present in the loop, and therefore must also equal zero since there are no sources in a closed loop.

The Algebraic Sum of the Changes of Potential Around Any