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ROBLEMA 1: Un alambre recto de cobre de longitud horizontal tiene una corriente i = 28 A (ver figura). Cul es la magnitud y direccin

ROBLEMA 1: Un alambre recto de cobre de longitud horizontal tiene una corriente i = 28 A (ver figura). Cul es la magnitud y direccin del mnimo campo magntico B que se necesita para mantener suspendido el alambre - esto es, para balancear la fuerza gravitacional sobre este? La densidad lineal (masa por unidad de longitud) del alambre es 46.6 g/m. Argumente con principios fsicos la razn de la direccin escogida para B.
FB mg Figura

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