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NEET2005PhysicsCurrent ElectricityActual

When a wire of uniform cross section a , length l and resistance R is into a complete circle, resistance between any two of diametrically opposite point will be:

Options

  1. AR 4
  2. B4 R
  3. CR 8
  4. DR 2

Correct answer

A. R 4

Step-by-step solution

Both are in parallel aligned & 1 R^ = 2 R + 2 R = 4 R & R^ = R 4 aligned

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