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NEET Sample Paper NEET Sample Test Paper-41

  • question_answer
    A transformer of 100% efficiency has 200 turns in the primary and 40,000 turns in secondary. It is connected to a 220V main supply and secondary feeds to a\[100k\Omega \]resistance. The potential difference per turn is:

    A) 1.1V                

    B) 25V   

    C) 18V                 

    D) 11V

    Correct Answer: A

    Solution :

    From a transformer ratio \[\frac{{{V}_{s}}}{{{V}_{p}}}=\frac{{{N}_{s}}}{{{N}_{p}}}\] \[\frac{{{V}_{s}}}{220}=\frac{40,000}{200}\] \[{{V}_{s}}=44000\operatorname{V}\] P.d per turn = \[\frac{{{V}_{s}}}{{{N}_{s}}}=\frac{44000}{40000}=101V\]


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