問題一覧
1
0.004 mA
2
1.8 mv
3
1 amp
4
the fourth
5
2
6
milliamperes
7
closed
8
C
9
a diode
10
S4
11
definitely increase
12
adding an inductor to the circuit (in series)
13
2/3
14
Copper has low resistance relative to its cost.
15
1.67 A
16
75 W
17
8
18
6
19
The substation transforms the efficient high-voltage power coming off the lines to a safer, lower value for household use.
20
3000 ohms
21
The total current flow will be smaller when the lamp first lights, then increase dramatically.
22
5 amps
23
2000W
24
An inductor wired in series with the lamp
25
L1 will light up, and L2 will remain at the same brightness; the power draw on the battery will double.
26
twice as much current in the 2.5 . resistor
27
The device might burn out due to higher currents.
28
B
29
L2 only will stay lit.
30
the sum of the values on each ammeter
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1
0.004 mA
2
1.8 mv
3
1 amp
4
the fourth
5
2
6
milliamperes
7
closed
8
C
9
a diode
10
S4
11
definitely increase
12
adding an inductor to the circuit (in series)
13
2/3
14
Copper has low resistance relative to its cost.
15
1.67 A
16
75 W
17
8
18
6
19
The substation transforms the efficient high-voltage power coming off the lines to a safer, lower value for household use.
20
3000 ohms
21
The total current flow will be smaller when the lamp first lights, then increase dramatically.
22
5 amps
23
2000W
24
An inductor wired in series with the lamp
25
L1 will light up, and L2 will remain at the same brightness; the power draw on the battery will double.
26
twice as much current in the 2.5 . resistor
27
The device might burn out due to higher currents.
28
B
29
L2 only will stay lit.
30
the sum of the values on each ammeter