本课配套习题挑战模式1/5
多选题
难度系数:
1.下列关于电磁现象的说法中正确的是( )
A: 用磁感线可以形象地描述磁场 |
B: 迅速变化的电流会产生电磁波 |
C: 电动机的原理是电磁感应现象 |
D: 电磁铁的磁性强弱只由电流的大小决定 |
一次做对,真牛!
+5奖励规则>
- 提示1:55S15Yqo5py655qE5Y6f55CG5piv5Yip55So6YCa55S157q/5ZyI5Zyo56OB5Zy65Lit5Y+X5Yqb6L+Q5Yqo55qE5Y6f55CG55qE5Yi25oiQ55qE
- 提示2:55S156OB6ZOB55qE56OB5oCn55qE5by65byx6Lef55S15rWB55qE5aSn5bCP5ZKM57q/5ZyI55qE5Yyd5pWw5pyJ5YWz
- 答案:QSxC
QeOAgeS4uuS6huW9ouixoeebtOingueahOaPj+i/sOejgeWcuu+8jOeJqeeQhuWtpuS4reW8leWFpeS6huejgeaEn+e6v++8juaVhUHmraPnoa7vvI48YnI+QuOAgei/hemAn+WPmOWMlueahOeUtea1geWRqOWbtOWtmOWcqOedgOeUteejgeazou+8juaVhULmraPnoa7vvI48YnI+Q+OAgeeUteWKqOacuueahOWOn+eQhuaYr+WIqeeUqOmAmueUtee6v+WciOWcqOejgeWcuuS4reWPl+WKm+i/kOWKqOeahOWOn+eQhueahOWItuaIkOeahO+8juaVhUPplJnor6/vvI48YnI+ROOAgeeUteejgemTgeeahOejgeaAp+eahOW8uuW8sei3n+eUtea1geeahOWkp+Wwj+WSjOe6v+WciOeahOWMneaVsOacieWFs++8juaVhUTplJnor6/vvI48YnI+5pWF6YCJQeOAgUI=
本课配套习题挑战模式2/5
单选题
难度系数:
2.如图所示的实验装置中,当开关闭合时,能观察到导体棒ab沿金属导轨运动,利用这一现象所揭示的原理,可制成的设备是()
A: 电热器 |
B: 发电机 |
C: 电动机 |
D: 电磁继电器 |
一次做对,真牛!
+5奖励规则>
- 提示1:55Sx5Zu+5Lit6KOF572u5Y+v55+l77yM5q2k5a6e6aqM56CU56m255qE5piv6YCa55S15a+85L2T5Zyo56OB5Zy65Lit5Lya5Y+X5Yiw56OB5Yqb5L2c55So77yM55S15Yqo5py65bCx5piv5qC55o2u56OB5Zy65a+56YCa55S15a+85L2T55qE5L2c55So5Yqb5Yi25oiQ55qE77yO
- 答案:Qw==
55Sx5Zu+5Lit6KOF572u5Y+v55+l77yM5q2k5a6e6aqM56CU56m255qE5piv6YCa55S15a+85L2T5Zyo56OB5Zy65Lit5Lya5Y+X5Yiw56OB5Yqb5L2c55So77yM55S15Yqo5py65bCx5piv5qC55o2u56OB5Zy65a+56YCa55S15a+85L2T55qE5L2c55So5Yqb5Yi25oiQ55qE77yOPGJyPuaVhUPpgInpobnmraPnoa4=
本课配套习题挑战模式3/5
单选题
难度系数:
3.图中所示的四个实验中,说明电动机工作原理的实验是
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:ROWbvuivtOaYjumAmueUteWvvOS9k+WcqOejgeWcuuS4reWPl+WIsOWKm+eahOS9nOeUqO+8jOespuWQiOmimOaEjw==
- 答案:RA==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.如图所示四个演示实验中,能够说明直流电动机原理的是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5q2k5a6e6aqM5o6i56m255qE5piv55u05rWB55S15Yqo5py655qE5bel5L2c5Y6f55CG77yM56ym5ZCI6aKY5oSP
- 答案:Qg==
QeOAgeeglOeptueahOaYr+mAmueUteWvvOS9k+WcqOejgeWcuuS4reWPl+WKm+i/kOWKqO+8jOS4jeespuWQiOmimOaEj++8mzxicj5C44CB5q2k5a6e6aqM5o6i56m255qE5piv55u05rWB55S15Yqo5py655qE5bel5L2c5Y6f55CG77yM56ym5ZCI6aKY5oSP77ybPGJyPkPjgIHmraTlm77kuLrlj5HnlLXmnLrnmoTljp/nkIblm77vvIzkuI3nrKblkIjpopjmhI/vvJs8YnI+ROOAgeatpOWunumqjOS4uuWlpeaWr+eJueWunumqjO+8jOS4jeespuWQiOmimOaEj++8mzxicj7mlYXpgIlC77yO
本课配套习题挑战模式5/5
单选题
难度系数:
5.图所示的四种电器中,利用电动机原理工作的是()
A: 电炉 |
B: 电风扇 |
C: 电饭煲 |
D: 电铃 |
一次做对,真牛!
+5奖励规则>
- 提示1:55S16aOO5omH5piv5oqK55S16IO96L2s5YyW5Li65py65qKw6IO9
- 答案:Qg==
55S15Yqo5py65piv5oqK55S16IO96L2s5YyW5Li65py65qKw6IO955qE6KOF572u77yM55S16Lev5pe25Yip55So55S15rWB54Ot5pWI5bqU5oqK55S16IO96L2s5YyW5Li65YaF6IO96YCJ6aG5QemUmeOAgueUtemjjuaJh+aYr+aKiueUteiDvei9rOWMluS4uuacuuaisOiDve+8jOmAiemhuULlr7njgILnlLXppa3nhbLmmK/miornlLXog73ovazljJbkuLrlhoXog73vvIzpgInpoblD6ZSZ44CC55S16ZOD5Yip55So55qE5piv55S15rWB55qE56OB5pWI5bqU5b2i5oiQ5a+55Lqk5pu/5ZC45byV5o6S5pal77yM5LiN5piv55S15Yqo5py677yM6YCJ6aG5ROmUmeOAgg==