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电容器的电容、电压和电量之间的关系比较抽象,在课堂上如果教师只讲解C=Q/U这个电容定义式或Q=CU,学生缺乏感性认识,安装一个演示电容、电压、电量关系示教板,有助于学生加深对上述关系的理解。示教板电路如图所示。器材:G为演示电流计(指针可以双向偏转,配适当分流电阻,使指针偏转明显)C_1与C_2为1000微法的电解电容器,E_1=1.5V(一节干电池),E_2=3V(两节干电
The relationship between the capacitor’s capacitance, voltage, and power is relatively abstract. In the classroom, if the teacher only explains C=Q/U, the capacitor definition or Q=CU, the student lacks perceptual knowledge and installs a demonstration capacitor, voltage, and electricity. Teaching boards help students deepen their understanding of the above relationships. Teaching board circuit as shown. Equipment: G is a demonstration galvanometer (the pointer can be bi-directionally deflected, with a suitable shunt resistor, so that the pointer deflection is obvious) electrolytic capacitor C_1 and C_2 is 1000 microfarads, E_1=1.5V (a dry cell), E_2=3V (two sections Dry electricity