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Which emission does an electric vehicle produce at the point of use?

  • A.No exhaust emissions at all, though tyre and brake wear particles and upstream generation emissions remain
  • B.None from the tailpipe
  • C.Carbon dioxide, which is produced by the battery during charging and discharging throughout its service life
  • D.All of the usual emissions

Answer: B

There is no tailpipe, but wear particles and the emissions of generating the electricity remain. The last option states that qualification, which makes it a correct and more honest version of the same answer. The shared behaviour explains why these belong together and the differences explain why both exist. A symptom that appears under one condition and not another is what narrows the diagnosis quickly. Most errors here come from carrying a result across from a neighbouring case where it does not hold.

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