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Punjab Medical Punjab - MET Solved Paper-2010

  • question_answer
    In a step-up transformer the voltage in the primary is \[220V\] and die current is\[5A\]. The secondary voltage is found to be\[22000V\]. The current in the secondary (neglect losses) is

    A) \[5A\]                                  

    B) \[50A\]

    C) \[500A\]                              

    D) \[0.05A\]

    Correct Answer: D

    Solution :

    For a transformer,\[\frac{{{V}_{s}}}{{{V}_{p}}}=\frac{{{i}_{p}}}{{{i}_{s}}}\] \[_{{}}\]\[\Rightarrow \]               \[{{i}_{s}}={{i}_{p}}\times \frac{{{V}_{p}}}{{{V}_{s}}}=5\times \frac{220}{22000}=0.05\,\,A\]


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