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\\( L \\) \u306e\u57fa\u672c\u7684\u306a\u65b9\u7a0b\u5f0f \\( V = L * \\frac{di}{dt} \\) \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u3053\u3067 \\( V \\) \u306f\u96fb\u5727\u3001\\( i \\) \u306f\u96fb\u6d41\u3001\\( dt \\) \u306f\u6642\u9593\u306e\u5fae\u5c0f\u5909\u5316\u3092\u8868\u3057\u307e\u3059\u3002RL\u56de\u8def\uff08\u62b5\u6297\u3068\u30a4\u30f3\u30c0\u30af\u30bf\u30f3\u30b9\u306e\u307f\u3092\u542b\u3080\u56de\u8def\uff09\u306e\u5834\u5408\u3001\u4e00\u6642\u5b9a\u6570 \\( \\tau \\) \u306f \\( \\tau = \\frac{L}{R} \\) 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