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JCECE Engineering JCECE Engineering Solved Paper-2009

  • question_answer
    A battery of emf \[10\,\,V\] and internal resistance \[3\Omega \] is connected to a resistor. The current in the circuit is\[0.5\,\,A\] The terminal voltage of the battery when the circuit is closed is

    A) \[10\,\,V\]                                         

    B) \[0\,\,V\]

    C) \[1.5\,\,V\]                        

    D) \[8.5\,\,V\]

    Correct Answer: D

    Solution :

    Terminal voltage of the battery after closing the circuit is                 \[V=E-ir\]                 \[=10-0.5\times 3\]                 \[=10-1.5\]                 \[=8.5\,\,V\]


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