Identify the correct KCL equation at node A.

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Identify the correct KCL equation at node A.

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MPPGCL JE Electrical 28 April 2023 Shift 3 Official Paper

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$5 = \frac{V_{A}}{4} + \frac{V_{A} + 10}{3}$
$- 5 = \frac{V_{A}}{4} + \frac{V_{A} - 10}{2}$
$5 = \frac{V_{A}}{4} + \frac{V_{A} - 10}{3}$
$- 5 = \frac{V_{A}}{4} + \frac{V_{A} + 10}{3}$

Answer 1

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.

Explanation

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From the figure, V_B = 10 V

Applying KCL at node A, we get:

$5 + \frac{V_{A}}{4} + \frac{V_{A} - 10}{2} = 0$

$- 5 = \frac{V_{A}}{4} + \frac{V_{A} - 10}{2}$

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Identify the correct KCL equation at node A.

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