A. | B. | C. | D. |
E |
R |
△Φ |
△t |
1 |
R |
△B |
△t |
S |
R |
△B |
△t |
A.L1灯变暗,L2灯变亮,L3灯变暗 |
B.L1灯变亮,L2、L3灯都变暗 |
C.L1、L2两灯都变亮,L3灯变暗 |
D.L1、L2两灯都变暗,L3灯变亮 |
A.电源电动势为2.0V | ||
B.电源内阻为
| ||
C.电源短路时电流为6.0A | ||
D.电路路端电压为1.0V时,电路中电流为5.0A |
A.U减小 | B.U增大 | C.I增大 | D.I减小 |
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