Electromagnetic Induction

JEE Main level, single correct, medium

64 of 153

Question 64 of 153

A boat is moving due east in a region where the earth's magnetic field is 5.0×10−5NA−1 m−15.0 \times 10^{-5} \mathrm{NA}^{-1} \mathrm{~m}^{-1} due north and horizontal. The boat carries a vertical aerial 2 m2 \mathrm{~m} long. If the speed of the boat is 1.50 ms−11.50 \mathrm{~ms}^{-1}, the magnitude of the induced emf in the wire of aerial is :

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Answer: (C) 0.15mV0.15 \mathrm{mV}

E=BHVV=0.15mV\mathrm{E}=\mathrm{B}_{\mathrm{H}} \mathrm{VV}=0.15 \mathrm{mV}

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