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NEET Sample Paper NEET Sample Test Paper-66

  • question_answer
    In the circuit shown, the reading of ammeter when  switch  S is open and when switch S is closed respectively  are

    A) 3 A and 4 A                  

    B) 4 A and 5 A

    C) 5 A and 6 A                  

    D) 6 A and 7 A

    Correct Answer: B

    Solution :

    When switch S is open total current through ammeter. \[i=\frac{20}{(3+2)}\,\,=\,\,4\,A\] When switch is closed \[i=\frac{20}{3+(2\parallel 2)}\,\,=\,\,5\,A\]


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