Meters and troubleshootingQuestion 324 of 1506

Why is measuring current usually more hazardous than measuring voltage?

  1. The meter probes are shorter in length
  2. The meter goes in the current path of the circuit
  3. Current meters have no internal fuse at all
  4. Voltage meters are always fully insulated
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Correct answer: The meter goes in the current path of the circuit

Breaking a loaded circuit can cause an injurious spark when the last probe connects.

Source: Troubleshooting Motors and Controls (Dickson-Self), 1.3: Meter Usage

Practice meters and troubleshooting

Questions last reviewed: 18 October 2026