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AP EAMCET202420 May 2024Morning ShiftPhysicsCurrent ElectricityActual

A block has dimensions 1 ~cm , 2 ~cm and 3 cm . Ratio of the maximum resistance to minimum resistance between any pair of opposite faces of the block is

Options

  1. A9: 1
  2. B1: 9
  3. C18: 1
  4. D6: 1

Correct answer

A. 9: 1

Step-by-step solution

Resistance, R = l ~A R l ~A R _ = l_ A _ = 3 1 2 = 3 2 R _ = l_ A _ = 1 2 3 = 6 R _ R _ = 3 2 6 =9: 1

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