資源簡介 {#{QQABBYCgEwggwCiwAkAAAYJAACAA4gaCAAQQ33UwCCwgmGQkpgEQAJAeagGAQBAMAMOAAwBLyAFIABBAAAA==}#}#}}{#{QQABBYCgEwggwCiwAkAAAYJAACAA4gaCAAQQ33UwCCwgmGQkpgEQAJAeagGAQBAMAMOAAwBLyAFIABBAAAA==}#}#}}{#{QQABBYCgEwggwCiwAkAAAYJAACAA4gaCAAQQ33UwCCwgmGQkpgEQAJAeagGAQBAMAMOAAwBLyAFIABBAAAA==}#}#}}{#{QQABBYCgEwggwCiwAkAAAYJAACAA4gaCAAQQ33UwCCwgmGQkpgEQAJAeagGAQBAMAMOAAwBLyAFIABBAAAA==}#}#}}{#{QQABBYCgEwggwCiwAkAAAYJAACAA4gaCAAQQ33UwCCwgmGQkpgEQAJAeagGAQBAMAMOAAwBLyAFIABBAAAA==}#}#}}{#{QQABBYCgEwggwCiwAkAAAYJAACAA4gaCAAQQ33UwCCwgmGQkpgEQAJAeagGAQBAMAMOAAwBLyAFIABBAAAA==}#}#}}參考答案一、填空題1. 吸引輕小物體,摩擦起電2. 用電器,并3. 2,不做功4. 導(dǎo)體,從手到球5. 增大,降低6. 變小,不變7. 不能,斷開任意一個(gè)小彩燈,觀察其他小彩燈是否發(fā)光8. 1V,變大二、選擇題9. D10. A11. D12. B13. AC14. D三、計(jì)算題15. (1) 6m/s (2) 5.4×10 J (3) 9×10 W16. (1) L : 1.5V, L : 1.5V (2) L : 0.22A, L : 0.28A (3) 不能,會造成電源短路,電流表和電源可能會損壞17. (1) 1200N (2) 1.436×10 J (3) 27.8%四、實(shí)驗(yàn)與探究題18. (1) 電流,并 (2) 驗(yàn)電器,同種電荷相互排斥 (3) ①0.6V,負(fù)極 ②從銅片到鋅片19. (1) 斷開,短路 (2) 電流表正負(fù)接線柱接反了 (3) C,B (4) Ic = Ia + Ib,使用了相同規(guī)格的燈泡20. (1) 將電壓表指針調(diào)零 (2) 略 (3) L 斷路 (4) 不能,電壓表正負(fù)接線柱接反了 (5) 等于各部分電壓之和 (6) 實(shí)驗(yàn)次數(shù)太少,結(jié)論具有偶然性21. (1) 可行,可行 (2) ①20 ②有關(guān) ③A (3) 裝水量,好{#{QQABBYCEgwggwCiwAkAAAYJAACAA4gaCAAQQ33UwCCwgmGQkpgEQAJAeagGAQBAMAMOAAwBLyAFIABBAAAA==}#}#}} 展開更多...... 收起↑ 資源預(yù)覽 縮略圖、資源來源于二一教育資源庫