A Wheatstone bridge is balanced when
A) the ratio of resistances on the left side equals the ratio of resistances on the right side.
B) the ratio of resistances on the left side is less than the ratio of resistances on the right side.
C) the ratio of resistances on the left side is greater than the ratio of resistances on the right side.
D) the ratio of resistances on both sides equals the square root of the sum of all resistances.

Question

Quizplus · Accepted Answer

A Wheatstone bridge is balanced when the ratio of resistances on the left side is equal to the ratio of resistances on the right side. This is because in a balanced bridge, no current flows through the galvanometer, meaning that the potential difference across it is zero. This is only possible if the ratio of resistances on both sides is equal.

A Wheatstone Bridge Is Balanced When