如图所示,电源电动势E=9V,内电阻r=0.5Ω,电阻R1=5.0Ω、R2=3.5Ω、R3=6.0Ω、R4=3.0Ω,电容C=2.0 μF.两板间距离为0.17m.(1)电键接到a时,电容的带电量是多少?上极板带何种电荷?(2)电键从与a接触到与b
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![如图所示,电源电动势E=9V,内电阻r=0.5Ω,电阻R1=5.0Ω、R2=3.5Ω、R3=6.0Ω、R4=3.0Ω,电容C=2.0 μF.两板间距离为0.17m.(1)电键接到a时,电容的带电量是多少?上极板带何种电荷?(2)电键从与a接触到与b](/uploads/image/z/3130341-69-1.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E7%94%B5%E6%BA%90%E7%94%B5%E5%8A%A8%E5%8A%BFE%3D9V%2C%E5%86%85%E7%94%B5%E9%98%BBr%3D0.5%CE%A9%2C%E7%94%B5%E9%98%BBR1%3D5.0%CE%A9%E3%80%81R2%3D3.5%CE%A9%E3%80%81R3%3D6.0%CE%A9%E3%80%81R4%3D3.0%CE%A9%2C%E7%94%B5%E5%AE%B9C%3D2.0+%CE%BCF.%E4%B8%A4%E6%9D%BF%E9%97%B4%E8%B7%9D%E7%A6%BB%E4%B8%BA0.17m.%EF%BC%881%EF%BC%89%E7%94%B5%E9%94%AE%E6%8E%A5%E5%88%B0a%E6%97%B6%2C%E7%94%B5%E5%AE%B9%E7%9A%84%E5%B8%A6%E7%94%B5%E9%87%8F%E6%98%AF%E5%A4%9A%E5%B0%91%3F%E4%B8%8A%E6%9E%81%E6%9D%BF%E5%B8%A6%E4%BD%95%E7%A7%8D%E7%94%B5%E8%8D%B7%3F%EF%BC%882%EF%BC%89%E7%94%B5%E9%94%AE%E4%BB%8E%E4%B8%8Ea%E6%8E%A5%E8%A7%A6%E5%88%B0%E4%B8%8Eb)
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