v0 |
cos60° |
v2 |
R |
2mv0 |
qB |
| ||
qE |
1 |
2 |
3mv02 |
2qE |
2πR |
v |
2πm |
qB |
60° |
360° |
πm |
3qB |
πm |
qB |
180° |
360° |
πm |
2qB |
| ||
qE |
πm |
3qB |
πm |
2qB |
| ||
qE |
5πm |
6qB |
2mv0 |
qB |
3mv02 |
2qE |
| ||
qE |
5πm |
6qB |
L |
4 |
q |
m |
A.内环顺时针,外环逆时针 |
B.内环逆时针,外环顺时针 |
C.内、外环均为顺时针 |
D.内、外环均为逆时针 |
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