Решение задачи по физике раздел 17 пункт 79 электро

79. The coil with inductance L = 250 mH and the resistance R = 0,3000 ohms is connected to a DC voltage. After a period of time ? the current in the coil reaches a) 50% b) 75% of the final value? Compare the two values \u200b\u200bof ?.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)