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PhysicsNEET 2024Ohm's law, resistivity, temperature dependence

Current Electricity

A wire of length and resistance is divided into 10 equal parts. The first 5 parts are connected in series while the next 5 parts are connected in parallel. The two combinations are again connected in series. The resistance of this final combination is:

  1. A.
  2. B.
  3. C.
  4. D.

Solution

Each part is . Five in series give ; five in parallel give ; the two groups in series give .

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