Q. Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes

  • (A) 2R
  • (B) R/2
  • (C) 5R/4
  • (D) 3R/4
βœ… Correct Answer: (C) 5R/4

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