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NEET AIPMT SOLVED PAPER SCREENING 2005

  • question_answer
                    As a result of change in the magnetic flux linked to the closed loop shown in the figure, an emf V volt is induced in the loop. The work done (joules) in taking a charge Q coulomb once along the loop is:                                                                                                                                                                                                

    A)                 QV         

    B)                 zero                      

    C)                 2 QV                     

    D)                 QV/2

    Correct Answer: A

    Solution :

                              Induced emf                 work done in taking a charge                 \[=\frac{Q\,\,once\,along\,the\,loop}{ch\arg e\,Q}\]                 i.e.,        \[V=\frac{W}{Q}\]                         \[\Rightarrow W=VQ\]


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