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NTSE Sample Paper NTSE SAT Practice Test-19

  • question_answer
    In the following circuit, the current (I) flowing through the circuit is            

    A) \[\frac{4}{3}A\]                        

    B) \[\frac{3}{4}A\]

    C) \[\frac{2}{3}A\]                        

    D) none of these

    Correct Answer: B

    Solution :

    [b] \[\frac{1}{R}=\frac{1}{4}+\frac{1}{8}=\frac{2+1}{8}=\frac{3}{8}\] \[\therefore \,\,R=\frac{8}{3}\,\,\,\Omega \] Also, \[I=\frac{V}{R}=\frac{2\times 3}{8}=\frac{3}{4}\,\,A\]


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