A closed loop contains several element voltage drops whose total is $1…

Question

A closed loop contains several element voltage drops whose total is $18\,	ext{V}$. According to Kirchhoff's Voltage Law, the source rise in that loop must be

Accepted Answer

C. $18\,	ext{V}$

KVL requires the algebraic sum of rises and drops around the loop to be zero. Therefore the source rise must balance the total drop, so it must be $18\,	ext{V}$.

Answer

$0\,	ext{V}$

Answer

$9\,	ext{V}$

Answer

indeterminate because KVL does not relate sources and drops

A closed loop contains several element voltage drops whose total is $18\,\text{V}$. According to Kirchhoff's Voltage Law, the source rise in that loop must be