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The following four wires are made of the same material and are at the same temperature. Which one of them has highest electrical resistance
  • ALength $=$ $50\, cm$, diameter $=$ $0.5\, mm$
  • BLength $=$ $100\, cm$, diameter $=$ $1\, mm$
  • CLength $=$ $200\, cm$, diameter $=$ $2\, mm$
  • DLength $=$ $300\,cm$, diameter $=$ $3\, mm$
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