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MGIMS WARDHA MGIMS WARDHA Solved Paper-2003

  • question_answer
    Two bulbs A and B are connected in parallel. Bulb A will glow more than bulb B. If their resistances are \[{{R}_{A}}\] and \[{{R}_{A}}\] respectively. Then :

    A) \[{{R}_{A}}<{{R}_{B}}\]                                 

    B) \[{{R}_{A}}={{R}_{B}}\]

    C) \[{{R}_{A}}>{{R}_{B}}\]                                 

    D) none of these

    Correct Answer: A

    Solution :

    Since, bulbs A and B are connected in parallel, therefore the potential across both the bulbs is same i.e., \[V={{i}_{A}}{{R}_{A}}={{i}_{B}}{{R}_{B}}\] But bulb A glow more than bulb B Therefore,          \[{{i}_{A}}>{{i}_{B}}\] Hence,                  \[{{R}_{A}}<{{R}_{B}}\]


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