In a parallel circuit, the voltage across each branch is equal to the supply voltage.

In a parallel circuit, the voltage across each branch is equal to the supply voltage.

• A. False
• B. True
• C. Only if resistances are equal
• D. Cannot be determined

Answer: (B)

In parallel circuits, all branches are connected between the same two nodes, so they share the same potential difference. That means the voltage across every branch is the voltage provided by the source. In an ideal circuit this equals the supply voltage exactly. In a real circuit, it’s the source’s terminal voltage, which may be slightly lower if there’s internal resistance or wiring drops, but the voltage across each branch remains the same. This uniform voltage across branches is what distinguishes parallel from series, where voltages add up or divide among components.

In parallel circuits, all branches are connected between the same two nodes, so they share the same potential difference. That means the voltage across every branch is the voltage provided by the source. In an ideal circuit this equals the supply voltage exactly. In a real circuit, it’s the source’s terminal voltage, which may be slightly lower if there’s internal resistance or wiring drops, but the voltage across each branch remains the same. This uniform voltage across branches is what distinguishes parallel from series, where voltages add up or divide among components.