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A total charge of 1000 C moves through 100 Ω resistor in a time interval of 10s, calcualte the current flow across the resistor.
10000
1000
100
10
1
A total charge of 1000 C moves through 100 Ω resistor in a time interval of 10s, calcualte the potential difference between the two sides of resistor. 填空题都不要写单位
A total charge of 1000 C moves through 100 Ω resistor in a time interval of 10s, calcualte the power of resistor. （不要写科学计数法）
Which resistor has the smallest resistance at V1?
A
B
C
D
Which resistor is filament lamp?
A
B
C
D
When the switch is closed, what is the ratio of the reading on ammater X and Y?
1:1
1:2
2:1
3:2
3:1
开关闭合，Assume R=6Ω，what is the total resistance of this circuit?
Calculate the current I in the circuit
Assume conductor A and B are made by same material. The ratio of cross-sectional area of A and B is 1:4. What is the ratio of diameter of A and B?
1:2
2:1
4:1
condition is not enough
1:4
(同材料，A,B截面积比1:4). Assume the temperature is constant and length of A and B are same, what is the ratio of resistance of A and B?
1:2
2:1
4:1
condition is not enough
1:4
A
B
C
D
A
B
C
D
2:1
8:1
1:2
1:8
1:32
32:1
A
B
C
D
A
B
C
D
A
B
C
D
假设这个热敏电阻的温度升高
A
B
C
D
A
B
C
D
根据图中的实验结果，有多少个钉子是弱磁铁？