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Which method locates the circuit responsible for a parasitic drain?

  • A.Removing fuses one at a time while watching the current
  • B.Disconnecting the battery overnight, which reveals whether the drain is present by the voltage measured afterwards
  • C.A visual inspection
  • D.Measuring the voltage drop across each fuse, which indicates the current flowing without disturbing the circuit

Answer: A

Pulling fuses in turn identifies the circuit when the current falls. Measuring millivolt drop across a fuse achieves the same without waking modules and is genuinely the better modern technique, which makes the last option a real method. Reading the definition literally, rather than recalling a summary, avoids the usual confusion. Checking which component actually carries the load settles most questions of this kind at once. The shared properties explain why these belong to one family, and the differences explain why more than one exists.

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