JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Self Evaluation Test - Moving Charges and Mangetism

  • question_answer
    A voltmeter has a range 0-V with a series resistance R. With a series resistance 2R, the range is\[0-V'\]. The correct relation between V and V? is          

    A) \[V'=2V\]

    B) \[V'>2V\]

    C) \[V'>>2V\]

    D) \[V'<2V\]

    Correct Answer: D

    Solution :

    [d] \[V={{i}_{g}}(G+R)\] and \[V'={{i}_{g}}(G+2R)\] It shows,  \[V<V'<2V\]


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