Discover the wrong wire Puzzle

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3 Responses

  1. Gagan says:

    short all the wires at 1 end using the tape and walk over to the other end
    there, using the battery and bulb, determine the resistance of all wires. wel have 2 unknowns R1 and R2 – resistances of the two types of wires
    pick any 2 wires and note how much potential difference is required to have some fixed current….

    then wires on this end can be labeled. now short these and go to the other end and do the same thing

  2. Kenny The Juggler says:

    Er ah whoops! Maybe I should read more carefully too. 3 trips would be 30 kms in this problem.

  3. Kenny The Juggler says:

    There is no way to measure the resistance. See the original problem specs. My solution comprises of 3 trips which is 15km.