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COMEDK2017PhysicsCurrent Electricity

By using only two resistance coils-singly, in series, or in parallel-one should be able to obtain resistances of 3,4,12 and 16 ohms. The separate resistances of the coil are

Options

  1. A3 and 4
  2. B4 and 12
  3. C12 and 16
  4. D16 and 3

Correct answer

B. 4 and 12

Step-by-step solution

The maximum and minimum resistances are 16 and 3 that are obtained by series and parallel combination of resistances. From given option only 4 and 12 resistors satisfies this condition.

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