The potential difference across a resistor is directly proportional to the ___. A. current through it B. resistance of it C. power dissipated in it D. charge on it 相关知识点: 试题来源: 解析 A。解析:电阻两端的电势差与通过它的电流(current through it)成正比。B 选项电阻不是与电势差直接...
___ electric current flows through a wire, there is a potential difference. A. As far as B. As long as C. Even if D. As if 相关知识点: 试题来源: 解析 B 句意:只要有电流通过,导线就有电位差。A.As far as就...而言;B.As long as只要;C.Even if即使;D.As if似乎。根据句意,故...
解析 A。“potential difference”电势差是驱动电流的力。选项 B“the rate of flow of electric charge”是电荷的流动速率;选项 C“the opposition to the flow of electric current”是对电流的阻碍;选项 D“the electrical energy stored in a conductor”是导体中储存的电能。
Where I is the current in amperes, V is the potential difference in volts, and R is a constant, measured in ohms, called the resistance. Current is directly proportional to voltage loss through a resistor. That is, if the current doubles, then so does the voltage. To make a current flo...
What is the potential difference V_b - V_a shown in the circuit below? A 9.1-muF and a 6.8-muF capacitor are each charged to 2.5 x 10-4 C. Which has the larger electric potential difference? Explain the meaning of "electric potential difference (voltage)" and "electric current" a. ...
aThe surface potential is the potential difference between the interface and the interior of the electrode 表面潜力是接口和电极的内部的之间电位差 [translate] 英语翻译 日语翻译 韩语翻译 德语翻译 法语翻译 俄语翻译 阿拉伯语翻译 西班牙语翻译 葡萄牙语翻译 意大利语翻译 荷兰语翻译 瑞典语翻译 希腊语翻译 ...
aThe electric potential difference due to a point charge is 4.8v at a distance of 4.2cm from the charge.what will be the electric potential energy of the system if a second charge of 6 os placed at that location? 电位差由于点电荷是4.8v在远处4.2cm从charge.what将是系统的电势能,如果6 os...
The potential difference between any two points is then calculated by the expression: {eq}\displaystyle \Delta V=V_B-V_A=kq\left (\frac{1}{r_B}-\frac{1}{r_A}\right ) {/eq} Answer and Explanation:1 In this case, it does not matter that points a and b are not aligned because...
The potential difference across the battery terminals is 6.0V.(i) Use Fig. 5.2 to show that the current in the battery is 0.40 A.[2](ii) Calculate the internal resistance r of the battery.r=... [2](iii) Determine the ratio resistance of lamp A resistance of lamp B ratio =......
结果1 题目 16 The potential difference across a bulb is 12 V and 100 C of charge flows through it Calculate the amount of light and thermal energy dissipated by the bulb. D A 0.12 J B 8.33 J C 120 J D 1200 J 相关知识点: 试题来源: 解析 D 反馈 收藏 ...