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电流、电压和电阻是电学中三个重要的物理量.我们知道,电压是产生电流的原因,在一个闭合电路中,一个用电器两端电压发生变化,电流也发生变化;更换不同的电阻,电路中的电流也会发生变化.那么,电流、电压和电阻之间究竟存在什么样的关系呢?这需要我们通过实验去探究.一、提出问题事物之间都是有联系的,在一个电路中,相互变化的电流、电压、电阻之间也可能存在一定的联系.据此提出问题:串(并)联电路中,电流和电压、电阻之间是否存在一定
Current, voltage and resistance are three important physical quantities in electricity, and we know that voltage is the cause of the current. In a closed circuit, the voltage across an electrical appliance changes and the current changes; changing different resistors, circuits In the current will change.And then, the current, voltage and resistance what is the relationship between what exactly? This requires us to explore through the experiment.First, the problem is raised between things are linked, in a circuit , Mutual change of current, voltage, resistance may also exist a certain relationship.According to this question: string (and) the circuit, the current and voltage, whether there is a certain resistance