交通燈 (閉合電路,認識電能發光)

SKU: K209
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SKU: K209 Category:

需自行組裝,附送2節AA電池與說明書

描述

認識并聯電路:並聯是元件之間的一種連接方式,其特點是將幾個同類或不同類的元件、器件等正極與正極、負極與負極並列相連接。

認識紅綠燈:紅燈禁止通行,黃燈註意觀察周圍,綠燈自由通行,黃燈即將開放通行。

材質:塑料/塑膠

尺寸:110*80*40mm

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