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  1. Connect a rheostat in series with the light bulb and battery. By adjusting the resistance of the rheostat, the current that flows through the light bulb could be varied, and which gives different brightness.

  2. 因為argon佢係noble gas,佢好inert概 咁佢就5會同light bulb 裹好熱概鎢絲有reaction 咁冇reaction就5會有咩change咁就safe d la

    分類:科學及數學 > 化學 2007年12月04日

  3. C is incorrect. This is because only iron rusts (rusts = 生成鐵鏽). If the statement is changed to 「The tungsten wire corrodes.」, it is also incorrect. This is because 「corrosion of tungsten...

    分類:科學及數學 > 化學 2007年01月01日

  4. 1. R = V²/P = 110*110/40 = 302.5Ω 2. P = V²/R = 220*220/302.5Ω = 160W 如果唔爆炸或燒毀就有四倍亮度。

  5. 係咪即係想要 Stephy 首歌 "電燈膽" 的歌詞呀? 【電燈膽】 歌手:鄧麗欣 作曲:李峻一 填詞:李峻一 編曲:Johnny Yim 假使不能公開妒忌 學習大方接受 同行時要殿後 誰冷落舊朋友 節日約我三位一體的慶祝 沿途明亮燈飾閃映著沉重 言談...

    分類:電視 > 其他 - 電視 2007年05月08日

  6. Wet bulb temperature (濕球溫度) is measured by a wet- bulb thermometer (濕球溫度計...the evapouration of water during which latent heat is absorbed. A wet- bulb thermometer has a piece of cotton wrapped around the temperature sensitive region...

  7. In a series circuit, each light bulb only share a fraction of the voltage from the source (battery). But in a prarallel...voltage of the source (or battery), and R1 and R2 be the resistancee of the two bulbs respectively. In series arrangement, voltage of first bulb V1 = V...

  8. 「The bulb is not glow」係燈胆唔著。可能是 incomplete circuit,可能是 short circuit,可能是 the current is too small to light up the bulb ,亦有可能是 burnt out。原因有很多,但結果就剩係唔著。 「...

  9. (1) The light bulbs were found fused in kitchen . (2) The light bulb ...plural noun. (1) - bulb (S) -> were (2) - bulb -> was (3) - bulb (S) -> were

    分類:社會及文化 > 語言 2008年07月11日

  10. Thermometer 的 bulb 即係 最底部裝住最多液體(通常係酒精或水銀)的一部份. 而 bore 就...其高度正正反映 therometer 所處環境的溫度. 事實一支靚的 thermometer 都關乎到 bulb 同 bore 的. 其中 bulb 個玻璃壁要薄, size 要夠大, 而 bore...