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A stiff, straight, horizontal wire of length 25 cm and mass 20g is supported by electrical contacts at its ends, but is otherwise free to move vertically upward. The wire is in a uniform, horizontal magnetic field of magnitude .4T perpendicular to the wire. A switch connecting the wire to a battery is closed and the wire is shot upward, rising to a max height h. The battery delivers a total charge of 2C during the short time it makes contact with the wire. Find the height h.

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Category:- Physics
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