Find current 'I' in following circuit:

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This question was previously asked in
MPPGCL JE Electrical 28 April 2023 Shift 2 Official Paper
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  1. 2 A
  2. 4 A
  3. 1 A
  4. 3 A

Answer (Detailed Solution Below)

Option 4 : 3 A
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MPPGCL JE Electrical Full Test 1
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Detailed Solution

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Kirchhoff's Current Law

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According to Kirchhoff's Current Law, the total current entering a junction or a node is equal to the charge leaving the node. The algebraic sum of every current entering and leaving the node has to be zero.

Calculation

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Assuming incoming current as negative and outcoming current as positive.

Applying KCL at node A:

- 4 + 1 + I = 0

I = 4 - 1

I = 3A

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