Задача id12504

A wire in the shape of an open circle of radius R=1.0 m is in a uniform magnetic field with induction B=3.0•10-2 T. A conductive jumper is moved along the wire at a constant speed v=4.0 m/s so that the velocity vector v is orthogonal to the jumper. At the initial moment of time, the jumper touched the wire at some point. Determine the induced emf in the resulting closed loop at time t=0.2 s after the start of movement.

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