本课配套习题挑战模式2/5
单选题
难度系数:
2.小红家的洗衣机工作0.5h,电流做功为3.6×106J,这台洗衣机消耗的电能是( )
A: 1.8×106J |
B: 3.6×106J |
C: 7.2×106J |
D: 14.4J |
一次做对,真牛!
+5奖励规则>
- 提示1:55S15rWB5YGa5LqG5aSa5bCR5Yqf77yM5bCx6KGo56S655S16Lev5raI6ICX5LqG5aSa5bCR55S16IO9
- 答案:Qg==
5Zug5Li655S15rWB5YGa5YqfMy42w5cxMDxzdXA+Njwvc3VwPkrvvIzmiYDku6XmtJfooaPmnLrmtojogJfnmoTnlLXog73mmK8zLjbDlzEwPHN1cD42PC9zdXA+Su+8juaVhemAiULvvI4=
本课配套习题挑战模式3/5
单选题
难度系数:
3.
如果电视机、电烙铁和电风扇上都标有“220V,60W”字样,它们都在额定电压下工作相同时间,则三个用电器产生热量是( )
A: 电烙铁最多 |
B: 电视机最多 |
C: 电风扇最多 |
D: 一样多 |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+55S15Yqf562J5LqO55S15Yqf546H5ZKM5pe26Ze055qE5LmY56ev77yM5qC55o2u5Zub5Liq55So55S15Zmo55qE55So6YCU6YCJ5oup5q2j56Gu562U5qGIPC9wPg==
- 答案:QQ==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.小李同学的家里在这个月使用了120度电.下面几种说法中正确的是( )
A: 消耗的电能是120kW·h |
B: 消耗的电能是120kW |
C: 消耗的电能是120W |
D: 消耗的电能是120J |
一次做对,真牛!
+5奖励规则>
- 提示1:4oCc5bqm4oCd5piv55S16IO955qE5Y2V5L2N
- 答案:QQ==
5Zu96ZmF5Y2V5L2N5Yi25Lit5Yqf55qE5Y2V5L2N5piv54Sm6ICz77yM55Sf5rS75Lit6K6y55S15Yqf77yM5bCx5piv6K+05raI6ICX5LqG5aSa5bCR5bqm55qE55S177yM5Y2z55S16IO96KGo55qE56S65pWw77yM5a6D5piv55So5bqm5L2c5Li65Y2V5L2N77yO5bqm5Zyo54mp55CG5a2m5LiK56ew5Li65Y2D55Om5pe277yMMeWNg+eTpuaXtj0zLjbDlzEwPHN1cD42PC9zdXA+Su+8m+iAjFflkoxrV+aYr+WKn+eOh+eahOWNleS9je+8juaVhULjgIFD44CBROmUmeivr++8juaVhemAiUEu
本课配套习题挑战模式5/5
单选题
难度系数:
5.下列计算功的公式中,哪一个不适用于计算电功( )
A: W=UQ |
B: W=Pt |
C: W=UIt |
D: W=Fs |
一次做对,真牛!
+5奖励规则>
- 提示1:55S15rWB55qE6K6h566X5byP5Li6ST1RL3Qg77yM5bim5YWlVz1VSXTvvIzljbPlj6/lvpflh7rlj6blpJbkuIDkuKrlhazlvI9XPVVR
- 提示2:Vz1Gc+aYr+acuuaisOWKn+eahOWFrOW8jw==
- 答案:RA==
QuOAgeagueaNrlA9Vy90IOWPr+W+l++8mlc9UHTvvIzmlYVC6YCJ6aG555qE5YWs5byP5Y+v5Lul6K6h566X55S15Yqf77ybQ+OAgVc9VUl05piv55S15Yqf55qE5a6a5LmJ5byP77yM5pWFQ+mAiemhueeahOWFrOW8j+WPr+S7peiuoeeul+eUteWKn++8m+aVhemAiUTvvI4=