12th Class Physics Sample Paper Physics Olympiad Sample Paper-4

  • question_answer A copper wire of length 50.0 cm and total resistance of \[1.1\times {{10}^{-2}}\Omega \] is formed into a circular loop and placed perpendicular to a uniform magnetic field that is increasing at constant rate of \[10.0\text{ }mT/s\]. At what rate is thermal energy generated in the loop?

    A)  \[1.32\times {{10}^{8}}W\]     

    B)  \[2.36\times {{10}^{-4}}W\] 

    C)  \[3.68\times {{10}^{-6}}W\]

    D)    \[4.23\times {{10}^{-5}}W\]

    Correct Answer: C


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