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      <description>Học tập là con mắt của trí tuệ.</description>
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      <pubDate>2021-09-23 04:06:29 UTC</pubDate>
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         <author>mttv247</author>
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         <description><![CDATA[<div>   Hai điện trở R<sub>1</sub>, R<sub>2</sub> và ampe kế được mắc nối tiếp với nhau vào hai điểm A, B.<br>  a. Vẽ sơ đồ mạch điện trên.<br>  b. Cho R<sub>1</sub> = 5Ω, R<sub>2</sub> = 10Ω, ampe kế chỉ 0,2A. Tính hiệu điện thế của đoạn mạch AB theo hai cách.</div>]]></description>
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         <title>Đề bài</title>
         <author>mttv247</author>
         <link>https://padlet.com/mttv247/baitapvatli97/wish/1761904404</link>
         <description><![CDATA[<div>Ba điện trở R<sub>1</sub> = 5Ω, R<sub>­2</sub> = 10Ω, R<sub>3</sub> = 15Ω được mắc nối tiếp nhau vào hiệu điện thế 12V.</div><div>a.Tính điện trở tương đương của đoạn mạch.</div><div>b.Tính hiệu điện thế giữa hai đầu mỗi điện trở.</div>]]></description>
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         <title>Đề bài</title>
         <author>mttv247</author>
         <link>https://padlet.com/mttv247/baitapvatli97/wish/1761904407</link>
         <description><![CDATA[<div>    Đặt một hiệu điện thế U vào hai đầu đoạn mạch có sơ đồ như trên hình 4.4, trong đó điện trở R<sub>1</sub> = 4Ω, R<sub>2</sub> = 5Ω.</div><div>   a. Cho biết số chỉ của ampe kế khi công tắc K mở và khi K đóng hơn kém nhau 3 lần. Tính điện trở R<sub>3</sub>.</div><div>   b. Cho biết U = 5,4V. Số chỉ của ampe kế khi công tắc K mở là bao nhiêu ?&nbsp; &nbsp; &nbsp; &nbsp;</div>]]></description>
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         <author>mttv247</author>
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         <description><![CDATA[<div>   Cho mạch điện có sơ đổ như hình 4.2,trong đó điện trở R<sub>1</sub> = 5Ω, R<sub>2</sub> = 15Ω, vôn kế chỉ 3V.</div><div>  a. Số chỉ của ampe kế là bao nhiêu?</div><div>  b. Tính hiệu điện thế giữa hai đầu AB của đoạn mạch.</div>]]></description>
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         <pubDate>2021-09-25 00:22:25 UTC</pubDate>
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         <title>Trịnh Hồ Xuân Phương</title>
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         <title>Hoàng Minh 9/7-17</title>
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         <title>Ngô Ngọc Huyền Trân</title>
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         <title>Ngô Ngọc Huyền Trân</title>
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         <title>Ngô Ngọc Huyền Trân</title>
         <author>huyentranngo1907</author>
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         <title>Ngô Ngọc Huyền Trân</title>
         <author>huyentranngo1907</author>
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         <title>Trịnh Hồ Xuân Phương</title>
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         <title>Trịnh Hồ Xuân Phương</title>
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         <title>Hoàng Minh 9/7</title>
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         <pubDate>2021-09-28 23:20:40 UTC</pubDate>
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         <title>Nguyễn Quỳnh Lan</title>
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         <title>Nguyễn Quỳnh Lan</title>
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         <title>Nguyễn Quỳnh Lan</title>
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         <title>Bài tập 2</title>
         <author>mttv247</author>
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         <description><![CDATA[<div>Ba điện trở R1 = 10Ω, R2 = R3 = 20Ω được mắc song song với nhau vào hiệu điện thế 12V<br>&nbsp; &nbsp; a) Tính điện trở tương đương của đoạn mạch.<br>&nbsp; &nbsp; &nbsp;b) Tính cường độ dòng điện chạy qua mạch chính và qua từng mạch rẽ.</div>]]></description>
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         <pubDate>2021-10-03 09:33:11 UTC</pubDate>
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         <title>Bài tập 1</title>
         <author>mttv247</author>
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         <description><![CDATA[<div>Cho mạch điện có sơ đồ như hình 5.3 SBT, trong đó R1 = 20Ω, R2 = 30Ω, ampe kế A chỉ 1,2A. Số chỉ của các ampe kế A1 và A2 là bao nhiêu?</div>]]></description>
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         <pubDate>2021-10-05 12:17:18 UTC</pubDate>
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         <author>mttv247</author>
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         <description><![CDATA[<div>Cho mạch điện như sơ đồ hình vẽ, trong đó&nbsp;<br>&nbsp;R2 = 6R1. Biết vôn kế chỉ 30V, ampe kế A1 chỉ 0,5A.<br>&nbsp;a/ Tính R1, R2 và điện trở tương đương của đoạn mạch.<br>&nbsp;b/ Tìm số chỉ của ampe kế.<br>&nbsp;</div>]]></description>
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         <pubDate>2021-10-05 12:18:09 UTC</pubDate>
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