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A straight 1.2 m length iron rod is moved at 10 m/s through the earth's magnetic field at a location where it has magnitude 1.0 × 105 T. What is the magnitude of the induced emf between one end of the wire and the other end?

What formula do I use?


    Magnetic field of
    the Earth is ≈ 10^-5 T (!!!)
    ε = B•l•v =1•10^- 5•1.2•10 =1.2•10^-4

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