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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 45

  • question_answer
    A galvanometer of coil resistance\[1\Omega \]. is converted into voltmeter by using a resistance of \[5\Omega \]. in series and same galvanometer is converted into ammeter by using a shunt of \[1\Omega \]. Now ammeter and voltmeter are connected in circuit as shown, find the reading of voltmeter and ammeter.

    A) 3 volt, 3 amp    

    B) 2 volt, 2 amp   

    C) 4 volt, 3 amp                

    D) 3 volt, 4 amp

    Correct Answer: A

    Solution :

      [a] \[{{R}_{voltmeter}}=6\Omega ,\,\,{{R}_{ammeter}}=0.5\Omega ,\,{{R}_{eq}}=10\Omega \] \[I=\frac{30}{10}=3A\] Reading of voltmeter \[=1\times 3=3\] volt.          


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