作业帮谁会物理专业的英语帮忙翻一下How is the current related to the potential gradient in conductor? If two terminal point on a conductor are held at a constant potential difference V, e.g., by connecting them to the electrodes of battery, th
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谁会物理专业的英语帮忙翻一下How is the current related to the potential gradient in conductor? If two terminal point on a conductor are held at a constant potential difference V, e.g., by connecting them to the electrodes of battery, th
谁会物理专业的英语帮忙翻一下
How is the current related to the potential gradient in conductor? If two terminal point on a conductor are held at a constant potential difference V, e.g., by connecting them to the electrodes of battery, then in equilibrium a steady current flows through the conductor. Let I be the current at either point, It is found that for many cases the current and potential difference are proportional, equation V=IR is Ohm’s law. The constant of proportionality R is called the resistance of the conductor. The SI unit of resistance is the ohm, 1/R is called the conductance, and its unit is Siemens. Ohm’s law holds to a very good approximation for many conductors. However, it is not a universal principle, and in sec.7.7 we will see an example where it doesn’t hold.
谁会物理专业的英语帮忙翻一下How is the current related to the potential gradient in conductor? If two terminal point on a conductor are held at a constant potential difference V, e.g., by connecting them to the electrodes of battery, th
如何是当前有关在导体的电位梯度?如果两个导体的终点举行恒定的电位差V时,例如,将它们连接到电池的电极,然后在平衡稳定的电流流通过导体.让我在任何一点的电流,它被发现,许多情况下,现有的和潜在的差异成正比,公式：V = IR是欧姆定律.常数相称ŕ的是被称为导体电阻.电阻的SI单位是欧姆,1/被称为电导,其单位是西门子.欧姆定律,拥有很好的逼近了许多导线.然而,这不是一个普遍的原则,在sec.7.7我们将看到一个例子,它并不持有.