Tenaga daripada sel kering menggerakkan arus dalam litar lengkap. Tanpa sumber tenaga, mentol tidak dapat menyala.
Langkah 1
Sel kering ialah pembekal tenaga
Tenaga daripada sel kering menggerakkan arus dalam litar lengkap. Tanpa sumber tenaga, mentol tidak dapat menyala.
sel kering → tenaga → litar
pembekal tenaga = 供应能量的零件 干电池的能量推动电流在完整电路里流动。没有能量来源，灯泡就不会亮。 例子：时钟的电池没电，指针就停住不走。 注意：电线和开关都不能代替电池，它们没有能量。
pembekal tenaga = energy supplier Energy from the dry cell pushes current around a complete circuit. Without an energy source, the bulb cannot light up. Example: When a wall clock's battery runs flat, the hands stop moving. Watch out: Wires and switches cannot replace the cell, because they hold no energy.
Langkah 2
Mentol menukarkan tenaga kepada cahaya
Apabila arus melalui mentol yang baik, mentol mengeluarkan cahaya. Mentol kaca perlu dikendalikan dengan cermat.
tenaga elektrik → mentol → cahaya
mentol menukar tenaga = 灯泡转换能量 电流流过好的灯泡时，灯泡把电能变成光。玻璃灯泡容易碎，要小心拿。 例子：打开桌灯，灯泡把电变成光，书桌就亮了。 注意：灯泡里面的细丝断了，电流过不去，就算电池有电也不会亮。
mentol menukar tenaga = the bulb changes energy When current passes through a working bulb, the bulb changes electrical energy into light. Glass bulbs break easily, so handle them carefully. Example: Switch on a desk lamp and its bulb turns electricity into light over your book. Watch out: If the thin wire inside a bulb is broken, current cannot pass, so it stays dark even with a good cell.
Langkah 3
Suis mengawal litar
Suis tertutup melengkapkan laluan arus, manakala suis terbuka memutuskan laluan. Oleh itu suis menentukan sama ada mentol boleh menyala.
suis tertutup: lengkap | suis terbuka: terputus
suis mengawal litar = 开关控制电路 开关关上（tertutup）时，电流的路接通；开关打开（terbuka）时，路就断了。所以开关决定灯泡亮不亮。 例子：电风扇按下开关就转，再按一下就停。 注意：开关关上时灯泡亮，打开时灯泡熄，学生常把两种状态弄反。
suis mengawal litar = the switch controls the circuit A closed switch completes the path for the current, while an open switch breaks it. So the switch decides whether the bulb can light. Example: Press a fan's switch and the blades spin; press again and they stop. Watch out: A closed switch means the bulb is on and an open switch means it is off; pupils often swap these.
Semak cepat · Soalan 1 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Apakah tugas sel kering?
tugas sel kering = 干电池的工作 题目问干电池在电路里做什么。回想灯泡、开关、干电池各有不同的工作。找出属于干电池的那一个，不要选成别的零件的工作。 例子：电子秤装进新电池，屏幕才显示数字。 注意：灯泡很亮，不代表电池本身会发光。
tugas sel kering = job of the dry cell The question asks what a dry cell does in a circuit. Recall that the bulb, the switch and the cell each have a different job. Pick the job that belongs to the cell, not to another part. Example: A kitchen scale shows numbers only after new batteries are put in. Watch out: A bright bulb does not mean the cell itself gives out light.
Semak cepat · Soalan 2 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Apakah hasil utama mentol?
hasil utama mentol = 灯泡的主要产物 题目问灯泡通电后主要产生什么。想一想晚上开灯时，你的眼睛最先注意到什么改变，再检查每个选项是不是来自别的电器。 例子：电热水壶通电后，主要产生热，把水煮滚。 注意：utama 是“主要”，灯泡用久了会有点热，但那不是主要产物。
hasil utama mentol = main output of a bulb The question asks what a bulb mainly produces when current flows. Think about what your eyes notice first when a lamp is switched on at night, and whether each choice comes from another appliance instead. Example: An electric kettle mainly produces heat to boil water. Watch out: Utama means main; a bulb may get a little warm, but warmth is not its main output.
Ringkasan
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Ingat: sel kering ialah pembekal tenaga; mentol menukarkan tenaga kepada cahaya; suis mengawal litar.
