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A railway track running north-south has two parallel rails 1 m apart. Calculate the value of induced emf between the rails, when a train passes at a speed of 25 m/s. The vertical component of earth's magnetic field at that place is $0.3 × 10^{-4} Wbm^{-2}$. |
$1.3 × 10^{-3} V$ $1.3 × 10^{3} V$ $7.5 × 10^{-4} V$ $0.13\, V$ |
$7.5 × 10^{-4} V$ |
The correct answer is Option (3) → $7.5 × 10^{-4} V$ |
