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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 15

  • question_answer
    A uniform wire of resistance 20 ohm having resistance \[1\,\Omega /m\] is bent in the form of a circle as shown in figure. If the equivalent resistance between P and Q is \[1.8\text{ }ohm,\]then the length of the shorter section is (in m)?

    Answer:

    2


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