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JEE Main & Advanced Sample Paper JEE Main Sample Paper-6

  • question_answer
    The emf and internal resistance of the battery shown in figure are 4.3 V and 1ft respectively. The external resistance R is\[50\Omega \]. The resistance of the voltmeter and ammeter are \[200\Omega \] and \[2\Omega \] respectively. Find the readings of the two meters.

    A)  0.1 A, 2 V           

    B)  0.1 A, 4 V

    C)  0.4 A, 1 V           

    D)  0.4 A, 4 V

    Correct Answer: B

    Solution :

    First of all draw the equivalent circuit diagram, current flowing through circuit \[=\frac{4.3}{(50||200+2+1)}=0.1A\] Voltmeter reading = 4.3 - 0.1 x 3 = 4 V


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