A circular coil of radius R = 15 cm is located relative to an infinitely long wire so that its plane is parallel to the wire. The perpendicular restored to the wire from the center of the turn is the normal to the plane of the turn. The current in the wire is I1 = 1 A, the current in the turn is I2 = 5 A. The distance from the center of the turn to the wire is d = 20 cm. Determine the magnetic induction at the center of the turn.

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