Two rails of a railway track insulated from each other and the grou...

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Two rails of a railway track insulated from each other and the ground are connected to a milli voltmeter. What is the reading of voltmeter, when a train travels with a speed of \( 180 \mathrm{~km} / \mathrm{hr} \) along the track. Given that the vertical component of earths magnetic field is \( 0.2 \times 10^{-4} \mathrm{~Wb} / \mathrm{m}^{2} \) and the rails are separated by math xmlns=http://www.w3.org/1998/Math/MathMLmn1/mn/math metre
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