... v=i x r Conductors have the same resistance irrespective of whether the current is c***tant or varying. For alternating current, resistance can be calculated using Ohm’s Law with instantaneous voltage and current. The resistance measured in Ohms (Ω) depends on the conductor’s resistivity (ρ),...
你如何计算公司的权益? 公司的权益或股东权益是公司总资产和总负债之间的净差额。公司的权益用于基本面分析,以确定其净值。 股东权益是指一家公司的净值,或者说,如果所有的资产都被清算,所有的债务都得到偿还...
...量。在粒子碰撞的情况下,用气体方程和气体动力学理论计算压力。 什么是蒸汽压(vapor pressure)? 蒸气压可以应用于液相或固相。它是在封闭系统中,当蒸汽和液体(固体)接触时,在给定温度下,蒸汽在其热力学平衡中对其...
...由销售收入支付。从这一点开始,公司就产生了利润。 如何计算盈亏平衡点-方法 通常有两种基本方法可以用来计算盈亏平衡点(BEP)。 方法一:利用bep图计算盈亏平衡点 固定成本:固定不变的成本,如工资、租金和营业场所...
...耗散的功率周期性地变化。 什么是直流电源(dc power)? DC current refers to a current formed by electr*** flowing continuously in one direction. As the electr*** flow through various components in the circuit, they lose their electrical energy. DC power refers to the amount of ener...
...S是峰值电流除以二的平方根。 什么是峰(peak)? Alternating currents change sinusoidally with time. Peak refers to the maximum value that the sinusoidally-varying current or voltage reaches. If the voltage is expressed in the form , then the peak voltage is . Peak-to-peak refe...
.... We saw that the magnitude of the total impedance can be given by . The current through the circuit is given by . If we change the frequency of the AC current, we can change both and . As these values change, the total impedance of the circuit will also change. This would mean that th...
...两种电流或电流的主要区别。交流电(ac) vs. 直流电流(dc current)交流电流和直流电流的区别在于直流电流是稳定的和单向的,即电子流总是朝着正方向流动。然而,交流电是向多个方向流动的,即电子的运动是先向前,然后向后。...
...C)和生产量(Q)的非线性方程 以下是术语的定义以及如何处理这三种情况的解释。 定义成本术语 边际成本是一家公司在生产一种或多种商品时所产生的成本。假设它生产两种商品,公司官员想知道如果生产增加到三种商...
...算是许多课程的基础,尤其是科学课程。这里有一个关于如何计算百分比的分步教程。 什么是百分比(percent)? 百分比或百分比表示“每一百个”,表示100%中某个数字的分数或总金额。百分号(%)或缩写“pct”用于表示百分...