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A coil formed by wrapping 50 truns of wi...

A coil formed by wrapping 50 truns of wire in the shape of square is positioned in a magnetic field so that the normal to plane of the coil makes an angle of `60^(@)` , with the direction of the field. When the magnetic field is increased uniformly from `200muT` to `600muT` in `0.4sec` , an emf of magnitude `I00mV` is induced in the coil. What is the total length of the wire ?

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