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Worksheetsphy_4.2.4_Series and parallel circuits 串聯及並聯電路
Total questions: 12
Worksheet time: 2hrs 33mins
如圖所示，利用一個安培計量度流經電阻器 R 的電流。電源的電壓為 6 V。假如安培計的讀數為 3 A，R 的電阻值是多少？
An ammeter is used to measure the current through a resistor R as shown. The voltage of the supply is 6 V. The ammeter reads 3 A. What is the resistance of R?
0.5 Ω
1.0 Ω
1.5 Ω
2.0 Ω
當三個電阻器如圖般接駁時，它們的等效電阻是 30 Ω。求電阻值 R。
The combination of three resistors as shown has an equivalent resistance of 30 Ω. Find resistance R.
5 Ω
10 Ω
20 Ω
30 Ω
在圖中的電路中，流經 3 Ω 電阻器的電流是 4 A。求 A 和 B 兩點之間的電勢差。
In the circuit as shown, the current flowing through the 3 Ω resistor is 4 A. What is the potential difference between A and B?
0.8 V
1.25 V
12 V
20 V
在圖中的電路中，1 Ω 電阻器兩端的電壓是多少？
What is the voltage across the 1 Ω resistor in the circuit shown?
1.0 V
2.0 V
3.0 V
4.0 V
如圖所示，兩個相同的燈泡 X 和 Y 接駁至一組電池和一個安培計上。兩個燈泡的等效電阻為 2 Ω，而安培計的讀數為 2 A。燈泡 X 兩端的電壓是多少？
Two identical light bulbs X and Y are connected to a battery and an ammeter as shown. The equivalent resistance of the light bulbs is 2 Ω and the ammeter reads 2 A. What is the voltage across light bulb X?
0.5 V
1 V
2 V
4 V
三個電阻器如圖般接駁至一組電池上。假如通過 6 Ω 電阻器的電流為 1.6 A，A 和 B 兩點之間的電壓是多少？
Three resistors are connected to a battery as shown. The current flowing through the 6 Ω resistor is 1.6 A. What is the voltage across A and B?
4.8 V
9.6 V
14.4 V
24 V
如圖所示，把四個完全相同的電阻器連接至電池組。求 A 點與 B 點兩端的電勢差。
Four identical resistors are connected to a battery as shown. Find the potential difference across points A and B in the above circuit.
1.5 V
3 V
4.5 V
6 V
下圖所示的為某電路的其中一部分。假如 V1 的讀數為 2.0 V，V2 的讀數是多少？
The figure below shows part of a circuit. If the reading of V1 is 2.0 V, what is the reading of V2?
0.8 V
2.5 V
5.0 V
無法計算
It cannot be determined.
如圖所示，兩個完全相同的燈泡接駁至一組 3 V 的電池上。如果燈泡 P 的電阻值為 6 Ω，求流經燈泡 Q 的電流。
Two identical filament lamps are connected to a 3 V battery as shown. If the resistance of lamp P is 6 Ω, find the current flowing through Q.
0.25 A
0.50 A
0.75 A
1.00 A
如圖所示，兩個電阻器 R1 和 R2 連接至一個電池組。流經 R1 和 R2 的電流分別為 I1 和 I2 。 R2 的電阻可寫成為
Two resistors R1 and R2 are connected to a battery as shown. The current through R1 and R2 are I1 and I2 respectively. The resistance of R2 can be expressed as
R1
I2I1R1
I1I2R1
I1R1I2
三個電阻器如下圖般接駁至一組電池上。假如流經 1 Ω 電阻器和 2 Ω 電阻器的電流分別為 I1 和 I2。求 I1 和 I2 的比。
Three resistors are connected to a cell as shown. The currents through the 1 Ω resistor and the 2 Ω resistor are I1 and I2 respectively. Find the ratio I1 : I2.
1 : 2
1 : 4
2 : 1
7 : 1
下列方程表示進入和離開電路上某一個結點的關係。 I1=I3+I2−I4 下列哪幅圖最能夠表達該結點附近的接駁方法？
The following equation shows the relation
between currents entering and leaving a junction in a circuit: I1=I3+I2−I4 . Which
of the following figure best shows the connection of the junction?
