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NEET NEET SOLVED PAPER 2016 Phase-II

  • question_answer
    The potential differences across the resistance, capacitance and inductance are 80 V, 40 V and 100 V respectively in an L-C-R circuit. The power factor of this circuit is

    A)  0.4                              

    B)  0.5

    C)  0.8                              

    D)  1.0

    Correct Answer: C

    Solution :

    \[\cos \phi =\frac{R}{Z}=\frac{{{V}_{R}}}{V}=\frac{80}{\sqrt{{{80}^{2}}+{{(100-40)}^{2}}}}\] \[=\frac{80}{100}=0.8\]


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