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По двум бесконечно длинным проводам, скрещенным под прямым углом, текут токи I₁= 30A и I₂=40 A. Расстояние между ними a=20 см. Найти магнитную индукцию B в точке C, одинаково удаленной от проводов на расстояние, равное a.
