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AP EAMCET201823 Apr 2018Evening ShiftPhysicsCurrent ElectricityActual

In the circuit shown in figure, power developed across 1 , 2 and 3 resistances are in the ratio.

Options

  1. A1 : 2 : 3
  2. B4 : 2 : 27
  3. C6 : 4 : 9
  4. D2 : 1 : 27

Correct answer

B. 4 : 2 : 27

Step-by-step solution

Current distribution is as shown in figure Powers are aligned & P₁=I₁^2 R₁= 4 9 i^2, P₂=I₂^2 R₂= 2 9 i^2, and P₃=I₃^2 R₃=3 i^2 & = 27 9 i^2 . & P₁: P₂: P₃:: 4: 2: 27 aligned

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