NEW
Font size
Worksheetsphy_4.2.3_resistance 電阻 1
Total questions: 8
Worksheet time: 2hrs 46mins
下列哪些敘述是正確的？
(1) 電路中的導線是導體。
(2) 導體內有可四處移動的電荷。
(3) 導體的電阻為零。
Which of the following statements are correct?
(1) Wires in circuits are conductors.
(2) Conductors contain movable charges.
(3) Conductors have zero resistance.
只有 (1) 和 (2)
只有 (1) 和 (3)
只有 (2) 和 (3)
(1)、(2) 和 (3)
當一台電視機接駁至220 V的電源後啟動，流經它的電流為0.7 A。該電視機的電阻值是多少？
A television set draws a current of 0.7 A from a 220 V supply when it is operating. What is the operating resistance of the television set?
144 Ω
154 Ω
286 Ω
314 Ω
一個1.5 V的電池接駁到一根電阻為5 Ω的金屬導線。流經導線的電流是多少?
A 1.5 V cell is connected across a metal wire of resistance 5 Ω. Find the current passing through the wire.
7.5 A
3.3 A
0.75 A
0.3 A
一個1.5 V的電池接駁到一根電阻為5 Ω的金屬導線。在一分鐘內，通過一個導線截面的電量是多少？
A 1.5 V cell is connected across a metal wire of resistance 5 Ω. Find the amount of charge passing through the wire in 1 minute.
18 C
45 C
198 C
450 C
一個1.5 V的電池接駁到一根電阻為5 Ω的金屬導線。在一分鐘內，通過一個導線截面的電子數量是多少？(已知電子的電荷量值是1.60 × 10−19 C)
A 1.5 V cell is connected across a metal wire of resistance 5 Ω. Find the number of electrons passing through a cross-section of the wire in 1 minute. (The magnitude of the charge of the electron is 1.60 × 10−19 C)
1.875 × 1018
5.200 × 1019
1.125 × 1020
1.250 × 1021
線圖中顯示通過某物質的電流與物質兩端的電壓之關係。
在下列各項敘述中，哪些是正確的？
(1) 當電流增加時，該物質的電阻也會增加。
(2) 當電流為2 A時，該物質的電阻為60 Ω。
(3) 該物質遵循歐姆定律。
Which of the following statements are correct?
(1) The resistance of the substance increases when the current through it increases.
(2) The substance has a resistance of 60 Ω when the current is 2 A.
(3) The substance obeys Ohm’s law.
只有(1)和(2)
只有(1)和(3)
只有(2)和(3)
(1)、(2)和(3)
線圖中顯示通過電阻線的電流怎樣隨電阻線兩端的電壓改變。下列哪些敘述是正確的？
(1) 歐姆定律對這條電阻線並不適用。
(2) 電阻線兩端的電壓上升時，它的電阻值也會增加。
(3) 電流降至零時，電阻線的電阻也會降至零。
The following graph shows how the current through a resistance wire changes with the voltage across it.
Which of the following statements is/are correct?
(1) The resistance wire does not obey Ohm’s law.
(2) The resistance of the wire increases with the voltage across it.
(3) The resistance of the wire approaches zero when the current approaches zero.
只有 (1)
只有 (1) 和 (2)
只有 (1) 和 (3)
只有 (2) 和 (3)
下列哪幅線圖最能夠表達一個典型半導體熱敏電阻器的I-V特性曲線？
Which of the following graphs best shows the I-V characteristic curve of a typical semiconductor thermistor?
