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Railways General Science & Technology Alternating Current / प्रत्यावर्ती धारा Sample Paper Alternating Current and Electromagnetic Induction Sample Test Paper-10

  • question_answer
    A long horizontal metallic rod with length along the east-west direction is falling under gravity. The potential difference between its two ends will be

    A)  Zero                

    B)  Constant

    C)  Increase with time

    D)  Decrease with time

    Correct Answer: D

    Solution :

    [d] \[e=Bvl\Rightarrow e\propto v\propto gt\]


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