In a parallel circuit, if one branch opens, the current through that branch will?

In a parallel circuit, each branch operates independently of the others. This means that if one branch of the circuit opens, the path for current in that specific branch is interrupted, resulting in the current flow through that branch becoming zero.

In a parallel arrangement, the total current supplied by the source is divided among the various branches, and the voltage across each branch remains the same. When a branch opens, while the current may continue to flow through the other branches, the specific branch that has opened can no longer carry current, signifying a complete halt to current flow in that branch.

Thus, the understanding of parallel circuits emphasizes that the integrity of each branch is crucial for current flow; if one branch is unable to complete its circuit, its current will drop to zero. This principle is vital in diagnosing circuit issues and understanding how changes in one part of a parallel circuit affect the overall functioning.