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  • Two rail tracks are 1m apart and insulated from each other and insulated from ground. A milivoltmeter is connected across the rail tracks. When a train travelling at  <img alt="180 \mathr

Two rail tracks are 1m apart and insulated from each other and insulated from ground. A milivoltmeter is connected across the rail tracks. When a train travelling at  180 \mathrm{~km} / \mathrm{h}  passes through, what will the reading in milivoltmeter? Given: horizontal component of earth's field \sqrt{3} \times 10^{\wedge}-4 \mathrm{~T}  and the dip at the place 60^{\circ}

Option: 1

1.5 \mathrm{mV}


Option: 2

15 \mathrm{mV}


Option: 3

\frac{15}{\sqrt{3}} \mathrm{mV}


Option: 4

\frac{1.5}{\sqrt{3}} \mathrm{mV}


Answers (1)

best_answer

180 \mathrm{~km} / \mathrm{h}=50 \mathrm{~m} / \mathrm{s} \\

\mathrm{L}=1 \mathrm{~m}, \mathrm{~B}_{\mathrm{V}}=\sqrt{3} \mathrm{~B}_{\mathrm{H}} \\

\mathrm{V}=50 \times 1 \times \sqrt{3} \times 10^{-4} \times \sqrt{3} \mathrm{~V}

Posted by

Riya

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