Bagaimana Ketel Listrik Bekerja? | Klik, blub-blub! Lagu Anak

What wakes the kettle? Just one click! An adult fills cool water to the line. Sets it on the base and flips the switch. The light shines; now the circuit is closed. Current flows through the insulated heater. Its resistance turns electrical energy to heat. Though out of sight, it starts to grow hot. Click — electric energy changes to heat. Heat flows in; the water circles round. Bubble-bubble — now the water boils. Click — the current switches itself off. A quiet shushing rises from below. Tiny bubbles grow along the bottom. Warmer water rises; cooler water sinks. That swirling motion spreads the heat. At the spout: a mist of tiny droplets. Bubbles grow; the water starts to boil. Heat or steam triggers the thermostat. Click — the circuit opens; light goes dark. Click — electric energy changes to heat. Heat flows in; the water circles round. Bubble-bubble — now the water boils. Click — the current switches itself off. An adult safely fills the waiting cup. Though switched off, the kettle remains hot.

Apa yang membangunkan ketel? Satu klik! Orang dewasa isi air dingin sampai tanda. Ketel ditaruh di alas, tombol ditekan. Lampu menyala, rangkaian pun tertutup. Arus lewat pemanas yang berisolasi. Hambatannya mengubah energi jadi panas. Meski tersembunyi, suhunya naik. Klik — energi listrik berubah jadi panas. Panas masuk, air pun berputar. Blub-blub — semua air mendidih. Lalu klik — arus terputus sendiri. Desis lembut terdengar dari bawah. Gelembung kecil tumbuh di dasar. Air hangat naik, yang dingin turun. Pusaran menyebar panas merata. Di dekat cerat tampak kabut tetesan. Gelembung membesar, semua air mendidih. Panas atau uap memicu termostat. Klik — rangkaian terbuka, lampu padam. Klik — energi listrik berubah jadi panas. Panas masuk, air pun berputar. Blub-blub — semua air mendidih. Lalu klik — arus terputus sendiri. Orang dewasa menuang air ke cangkir. Meski sudah mati, ketel masih panas.