Question

In a closed loop containing cells and resistors, what equals the total potential drop across the resistors?

Options

• The number of branches in the circuit

• The total current entering a junction

• The charge accumulated at the junction

• The total emf supplied by the sources

Answer 1

KVL gives \[\sum E=\sum IR\] for cells and resistors in a loop. Thus, the total emf supplied by the sources equals the total potential drop across the resistors.