In the circuit shown, if we connect a source of 2 volt with internal resistance of 1 Ω at AA′ with positive terminal at A′, then the current through R is

F1 Raviranjan 13-1-22 Savita D16

This question was previously asked in
UKPSC JE Electrical 2013 Official Paper II (Held on 7 Nov 2015)
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  1. 2 A
  2. 1.66 A
  3. 1 A
  4. 0.625 A

Answer (Detailed Solution Below)

Option 4 : 0.625 A
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Detailed Solution

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Calculation:

F1 Raviranjan 13-1-22 Savita D16

When source voltage is applied then

F1 Reported Raviranjan 21-2-22 Savita 1

Applying source transformation in the current source

F1 Raviranjan 13-1-22 Savita D18

Applying Nodal Analysis

V12+V2+V21=0

or, V1+V+2V42=0

or, 4 V = 5 ⇒ V = 1.25 V

∴ I=1.252=0.625 A

Therefore, the correct option is (4).

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