论文部分内容阅读
电路计算问题是电学中的重要问题,要顺利地解决电路计算问题,其关键是深刻理解和熟练掌握欧姆定律(包括闭合电路和部分电路欧姆定律);灵活应用串、并联电路的特点,是欧姆定律解决电路计算问题的基础。还有一类电路计算问题就是非纯电阻的电路计算问题,要顺利地解决这类问题,须从能量的转化和守恒的角度去考虑,即在电能转化为其他形式的能的过程中,能的总量保持不变。本文试图对电路计算问题中比较常见的类型进行归纳,仅供参考。 一、含有电池组的电路计算问题 电路中的电流是电源所提供的,一些电源往往是一组电池,这种电池组一般都是由多个相同的电池所组成。解决这类问题,首先要根据电池组的连接方式,求出电池组的总电动势和总内阻;然后应用欧姆定律及相关的电学知识进行求解。
The circuit calculation problem is an important issue in electricity. To successfully solve the circuit calculation problem, the key is to profoundly understand and master Ohm’s law (including closed circuit and partial circuit Ohm’s law); flexible application of series and parallel circuit characteristics, is ohm Laws solve the foundation of circuit computing problems. There is also a class of circuit calculation problems that are not purely pure circuit calculation problems. To successfully solve such problems, it must be considered from the perspective of energy conversion and conservation, that is, in the process of converting electrical energy into other forms of energy, The total remains unchanged. This article attempts to summarize the more common types of circuit calculation problems for reference only. First, the calculation problem of the circuit containing the battery pack The current in the circuit is provided by the power supply, and some of the power supplies are often a set of batteries. Such battery packs generally consist of a plurality of identical batteries. To solve such problems, we must first determine the total electromotive force and the total internal resistance of the battery pack according to the connection method of the battery pack; then apply Ohm’s law and related electrical knowledge to solve.