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Mathematics, 18.06.2021 07:50 mg0508092

1 /.cho cơ cấu chỉ thị có Rm= 1k ôm , nếu biến thành vôn kế 1 có tầm đo 10 V bằng cách thêm vào điện trở phụ 19 k ôm và nếu biến thành vôn kế 2 có tầm đó 300 V bằng cách thêm vào điện trở phụ 299 k ôm . hỏi vôn kế có độ nhạy nào lớn hơn ?

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1 /.cho cơ cấu chỉ thị có Rm= 1k ôm , nếu biến thành vôn kế 1 có tầm đo 10 V bằng cách thêm vào điện...
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