1.单选题- (共3题)

A.线框中有感应电流,且按顺时针方向 |
B.线框中有感应电流,且按逆时针方向 |
C.线框中有感应电流,但方向难以判断 |
D.由于穿过线框的磁通量为零,所以线框中没有感应电流 |

A.摩擦力大小不变,方向向右 |
B.摩擦力变大,方向向右 |
C.摩擦力变大,方向向左 |
D.摩擦力变小,方向向左 |

A.![]() |
B.![]() |
C.![]() |
D.![]() |
2.选择题- (共2题)
Different countries and people have different manners(举止).Here are some examples:If you visit a Chinese family,you should knock at the door first.When the door opens,you should not move before the host says “Come in,please.” Before coming into the house in Japan,it is good manners to take off your shoes.In European(欧洲的) countries,even if your shoes are very dirty,it is not necessary to take them off.In England,a guest(客人) always finishes the drink or the food to show that he enjoys it.This will make the host very pleased.
根据短文内容完成信息表,每空一词。
Countries | Situations | Good manners |
China | {#blank#}1{#/blank#}a Chinese family | Knock at the door first |
{#blank#}2{#/blank#} | Before entering the house | Take off your{#blank#}3{#/blank#} |
European countries | Before coming into the house | It is{#blank#}4{#/blank#}to wear(穿着) your shoes |
{#blank#}5{#/blank#} | At dinner | Finish the drink or the food |
3.多选题- (共2题)

A.此时AC两端电压为UAC=2BLv |
B.此时AC两端电压为![]() |
C.此过程中电路产生的电热为![]() |
D.此过程中通过电阻R0的电荷量为![]() |

A.图(II)时线框中的电功率为![]() |
B.此过程中回路产生的电能为![]() |
C.图(II)时线框的加速度为![]() |
D.此过程中通过线框截面的电量为![]() |
4.解答题- (共2题)

(1)R2的阻值;
(2)R1与R2消耗的电功率;
(3)拉ab杆的水平向右的拉力F.
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【1】题量占比
单选题:(3道)
选择题:(2道)
多选题:(2道)
解答题:(2道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:1
5星难题:0
6星难题:5
7星难题:0
8星难题:1
9星难题:0