Home › If the source voltage in the shown loop is incre…
If the source voltage in the shown loop is increased while the set of element voltage drops adjusts to a new steady state, Kirchhoff's Voltage Law requires that 
Athe sum $V_1+V_2+\cdots+V_7$ must increase to equal the new source voltage
Beach individual drop must remain unchanged
Cthe largest drop must always be across $V_7$
Dthe source voltage has no relation to the loop drops
Answer & Solution
Correct answer: A. the sum $V_1+V_2+\cdots+V_7$ must increase to equal the new source voltage
For the shown loop, KVL gives $V_1+V_2+\cdots+V_7-V_s=0$, so the total of the drops must match the source voltage for that loop traversal. If $V_s$ increases and the circuit reaches a new steady state, the total drop must also increase accordingly.