If the below circuit is reduced to single resistance circuit then the value of resistance will be :

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MPPKVVCL Jabalpur JE Electrical 16 August 2018 Official Paper
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  1. 2.38 Ω 
  2. 1.9 Ω
  3. 10 Ω
  4. 0.5 Ω

Answer (Detailed Solution Below)

Option 1 : 2.38 Ω 
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Detailed Solution

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The correct option is 1

Concept:

Suppose R1 = 2

                R2 = 1

                 R3 = 4

                  R4 = 3

 R1 and R2 are in parallel = R12 = 

 R3 and R4 are in parallel = R34 = 

 R21 and R34 are in series 

Calculation: 

Requ = R21 + R34 = = 2.38 ohm

Additional point

  • Series connection: In a series connection resistance is connected back to back. The same amount of current flows through them.

  • parallel connection: In a parallel connection resistance is connected with the same node.

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