Задача id12501

A wire circuit in the shape of an equilateral triangle with side a=20 cm is placed in a uniform magnetic field with induction B=1.0 T so that the perpendicular to the plane of the circuit makes an angle a=60° with the direction of the field. At some point in time, the magnetic field induction begins to uniformly decrease to zero. Find the time for the induction to decay to zero if it is known that an induced emf e=100V occurs in the circuit.

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