A metallic wire `PQ` of length `1 cm` moves with a velocity of `2 m//s` in a direction perpendicular

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A metallic wire `PQ` of length `1 cm` moves with a velocity of `2 m//s` in a direction perpendicular to its length and perpendicular to a uniform magnetic field of magnitude `0.2 T`.Find the `emf` induced between the ends of the wire.Which end will be positively charged.
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