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NEET2009PhysicsCurrent ElectricityActual

A wire of resistance 12 m ⁻¹ is bent to form a complete circle of radius 10 ~cm . The resistance between its two diametrically opposite points, A and B as shown in the figure, is

Options

  1. A0.6
  2. B3
  3. C6
  4. D6

Correct answer

A. 0.6

Step-by-step solution

. Circumference of circle =2 10 100 = 2 10 = 5 Resistance of wire =12 5 = 12 5 Resistance of each section = 12 10 Equivalent resistance = 12 10 12 10 12 10 + 12 10 = 6 10 =0.6

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