电 (Electricity)

Front

电源 (Power Source)

Back

干电池 (Dry Battery), 发电站 (Power Station), 蓄电池 (Storage Battery), 发电机 (Generator), 小型发电机 (Small Generator), 太阳能电池 (Solar Cell), 氢燃料电池 (Hydrogen Fuel Cell)

Front

电路元件的符号 (Symbols of Circuit Components)

Back

开关 (Switch), 干电池 (Dry Battery), 电线 (Wire), 灯泡 (Light Bulb)

Front

串联电路 (Series Circuit)

Back

两个或以上的灯泡依次连接 (Two or more light bulbs connected in series)

Front

并联电路 (Parallel Circuit)

Back

两个或以上的灯泡并列连接 (Two or more light bulbs connected in parallel)

Front

电路图 (Circuit Diagram)

Back

灯泡的排列方式 (Arrangement of Light Bulbs)