Red Seal Electrician Practice
DC circuitsQuestion 698 of 1506

Which water-pipe idea matches Kirchhoff's Current Law at a junction?

  1. A pump: it makes pressure from nothing
  2. A reservoir: it keeps all the flow
  3. A pipe tee with no leaks: what enters must leave
  4. A valve: it adds new flow to the pipe at that point
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Correct answer: A pipe tee with no leaks: what enters must leave

A tee fitting without leaks passes on all the flow that enters it, as a node does with current.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 6.4: Kirchhoff’s Current Law (KCL)

Practice dc circuits

Questions last reviewed: 18 October 2026