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Консультация № 191737
13.11.2017, 09:01
0.00 руб.
0
4
1
Здравствуйте! Прошу помощи в следующем вопросе:
Пожалуйста помогите подробно описать решение этой задачи. Колебателиный контур состоит из катушки индуктивностью L= 10 мкГн, конденсатора емкостью C= 1,0 мкФ и резистора сопративлением R= 20 Ом. определить, через какое количество полных колебаний амплитуда тока в контуре уменьшиться в е раз. решение задачи
Пожалуйста помогите подробно описать решение этой задачи. Колебателиный контур состоит из катушки индуктивностью L= 10 мкГн, конденсатора емкостью C= 1,0 мкФ и резистора сопративлением R= 20 Ом. определить, через какое количество полных колебаний амплитуда тока в контуре уменьшиться в е раз. решение задачи
Обсуждение
13.11.2017, 09:59
общий
это ответ
Здравствуйте, dos-vera88!
При имеющихся числовых значениях величин колебания в контуре не возникнут. Поэтому уточните значения величин, а я привёл ниже решение задачи в общем виде.
Амплитуда затухающих колебаний тока в контуре уменьшится в
раз за время релаксации
Период колебаний тока в контуре
Число колебаний за время релаксации
Чтобы вычислить искомое число
полных колебаний, нужно взять целую часть числа 
и прибавить к ней единицу, то есть
При вычислениях нужно правильно подставлять в формулы значения величин, учитывая приставки к единицам измерения. Например, 10 мкГн=10[$183$]10-6 Гн, 1 мкФ=1[$183$]10-6 Ф.
При имеющихся числовых значениях величин колебания в контуре не возникнут. Поэтому уточните значения величин, а я привёл ниже решение задачи в общем виде.
Амплитуда затухающих колебаний тока в контуре уменьшится в
раз за время релаксацииПериод колебаний тока в контуре
Число колебаний за время релаксации
Чтобы вычислить искомое число
полных колебаний, нужно взять целую часть числа и прибавить к ней единицу, то естьПри вычислениях нужно правильно подставлять в формулы значения величин, учитывая приставки к единицам измерения. Например, 10 мкГн=10[$183$]10-6 Гн, 1 мкФ=1[$183$]10-6 Ф.
5
благодарю за помощь
Об авторе:
Facta loquuntur.
Facta loquuntur.
13.11.2017, 13:41
общий
Адресаты:
Есть такое понятие Добротность колебательного контура.
В высоко-добротном контуре колебания угасают оч медленно. В Вашей задаче добротность
Q=Корень(L/C)/R=Корень(10/1)/20=0,158 много меньше единицы. Поэтому амплитуда угасает быстрее одного периода.
В высоко-добротном контуре колебания угасают оч медленно. В Вашей задаче добротность
Q=Корень(L/C)/R=Корень(10/1)/20=0,158 много меньше единицы. Поэтому амплитуда угасает быстрее одного периода.
19.12.2017, 08:27
общий
Адресаты:
dos-vera88 вы мне очень помогли
Спасибо! Однако, вряд ли об этом нужно сообщать всем модераторам.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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