JEE Main & Advanced Sample Paper JEE Main Sample Paper-4

  • question_answer
    In the circuit shown the current in \[3\Omega \]resistor is

    A)  1A                                         

    B) \[\frac{30}{7}A\]

    C) \[\frac{5}{7}A\]                                

    D)  Information insufficient

    Correct Answer: C

    Solution :

    Apply KCL at junction having potential V \[\frac{V-10}{2}+\frac{V-0}{6}+\frac{V-0}{2}=0\]\[\Rightarrow \]\[V=30/7volt\] Both\[3\Omega \]resistors are connected in series, so required current \[i=\frac{V-0}{6}=\frac{5}{7}amp\]

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