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JEE Main & Advanced Physics Electro Magnetic Induction Question Bank Self Evaluation Test - Electromagnetic Induction

  • question_answer
    A boat is moving due east in a region where the earth's magnetic field is \[5.0\times {{10}^{-5}}N{{A}^{-1}}\,{{m}^{-1}}\] due north and horizontal. The boat carries a vertical aerial 2 m long. If the speed of the boat is\[1.50\,m{{s}^{-1}}\], the magnitude of the induced emf in the wire of aerial is                

    A) 0.75 mV

    B) 0.50 mV

    C) 0.15 mV

    D) 1 mV

    Correct Answer: C

    Solution :

    [c] Induced \[emf=v{{B}_{H}}l=1.5\times 5\times {{10}^{-5}}\times 2\] \[=15\times {{10}^{-5}}=0.15\,mV\]


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