In Kirchhoff's loop rule
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → The algebraic sum of changes in potential around any closed loop involving resistors and cells in the loop is zero.
Kirchhoff's loop rule states:
The algebraic sum of changes in potential around any closed loop is zero.
${\text{The algebraic sum of changes in potential around any closed loop involving resistors and cells in the loop is zero.}}$