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知识体系及复习要求 电流的概念(理解)电流 用电流表测电流(会) 串、并联电路中的电流特点(理解) 电压及其单位(知道)电压 干电池、家庭电路的电压值(知道) 用电压表测电压(会) 串、并联电路中的电压特点(理解) 电阻及其单位(知道)电阻 决定电阻大小的因素(知道) 滑动变阻器和电阻箱的构造(知道) 用滑动变阻器改变电流(会)
Knowledge System and Review Requirements Current Concept (Understanding) Current Current measurement using ammeters (current) Current characteristics in series and parallel circuits (understand) Voltage and its units (know) Voltage values of dry batteries, home circuits (know) Voltages used Metering Voltage (Will) Voltage Characteristics in Series and Parallel Circuits (understand) Resistance and its unit (know) Resistance determines the size of the resistor (knows) The construction of the sliding rheostat and the resistance box (knows) Use a sliding rheostat to change the current (will )