Red Seal Electrician Practice
Meters and troubleshootingQuestion 366 of 1506

What can a voltage drop measured across a connection in a loaded circuit show?

  1. That the source voltage is much too high for the load
  2. The connection's resistance; a big drop means high resistance
  3. That the load has been shorted out completely
  4. That the neutral wire is missing from the circuit
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Correct answer: The connection's resistance; a big drop means high resistance

High resistance at a poor connection uses up voltage the load needs.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 2.2: Series Circuits

Practice meters and troubleshooting

Questions last reviewed: 18 October 2026