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    Kirchhoff First Law - Practice Questions & MCQ

    Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

    Quick Facts

    • Kirchhoff first law is considered one of the most asked concept.

    • 17 Questions around this concept.

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    The Kirchhoff’s first law $\left(\sum i=0\right)$ and second law $\left(\sum i R=\sum E\right)$ where the symbols have their usual meanings, are respectively based on

     In the given circuit diagram, the currents, I1 = -0.3 A, I4 = 0.8 A and I5 = 0.4 A, are flowing as shown. The currents  I2 , I3  and  I6 ,respectively, are :  

    The electric potential at O is

     

     

    If $i_t=3 \sin t$ and $i_2=4 \cos t$, then $i_3$ is:

    Concepts Covered - 1

    Kirchhoff first law
    1. Kirchoff's first law

     In a circuit, at any junction, the sum of the currents entering the junction must equal the sum of the currents leaving the junction. This law is also known as Junction rule or current law (KCL)

    $\sum i=0$

    $i_1+i_3=i_2+i_4$

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    Kirchhoff first law

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