Ace the BMAT 2025 – Unleash Your Biomedical Superpowers!

In a parallel circuit, one of the fundamental principles is that the voltage across each branch is the same. This characteristic arises from how parallel connections are configured; each branch is directly connected to the same two points of the power source, allowing the full voltage of the source to be present across each branch.

This uniformity in voltage across all branches means that regardless of the individual resistances in those branches, the electric potential difference remains constant throughout. Therefore, each device or component connected in parallel receives the same voltage, which is crucial for their proper functioning.

In contrast, other options suggest variations in voltage, which do not occur in a parallel configuration. For instance, the concept that voltage varies across branches in a parallel circuit contradicts its defining characteristic. Similarly, the idea that voltage is greater in branches with lower resistance or that it sums up across branches misrepresents how voltage behaves in parallel connections. This fundamental understanding is crucial for analyzing electrical circuits correctly.