E |
R+r |
△∅ |
△t |
△∅ |
R+r |
BLX |
R+r |
1×0.3×1.2/0.6 |
3 |
1 |
2 |
v | 20 |
μmgcos370(h2-h1) |
sin370 |
Q |
3 |
T |
4 |
B0 |
T/4 |
4B0 |
T |
E1 |
R+r |
40B0 |
3 |
I | 21 |
T |
4 |
4
| ||
9 |
T |
4 |
T |
2 |
2πB0S |
T |
2πB0S | ||
|
E2 |
R+r |
2πB0S | ||
|
10
| ||
3 |
I | 22 |
T |
2 |
10
| ||
3 |
0.1 |
2 |
10π2
| ||
9 |
100
| ||
9 |
3T |
4 |
4
| ||
9 |
4
| ||
9 |
100
| ||
9 |
4
| ||
9 |
1 |
3 |
| ||
2 |
A.感应电流的方向由a到b,感应电动势的大小为o.2V |
B.感应电流的方向由a到b,感应电动势的大小为o.4V |
C.感应电流的方向由b到a,感应电动势的大小为o.2V |
D.感应电流的方向由b到a,感应电动势的大小为o.4V |
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