A conductor of length \( l \) is placed perpendicular to a horizontal uniform magnetic fielc. \(...

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A conductor of length \( l \) is placed perpendicular to a horizontal uniform magnetic fielc. \( B \). Suddenly, a certain amount of charge is passed through it, when it is found to jump to a height \( h \). The amount of charge that passes through the conductor is
(a) \( \frac{m \sqrt{g h}}{B l} \)
(b) \( \frac{m \sqrt{g h}}{2 B l} \)
(c) \( \frac{m \sqrt{2 g h}}{B l} \)
(d) None of these
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