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  1. you have no figure to show how the bulbs are connecting, assume 1 bulb connect serially to 2 bulbs which.../1.5R)2R = 4/9(V2/R), the power of each parallel bulb is, (V/3R)2R=1/9(V2/R), when one of the...

  2. ... voltage, more and more etectrical energy is pushed into the bulb , the wire in the bulb will be heat up, when the heat increases, the wire ...

  3. Light bulb .It is one kind of penetration circular telegram, (modern age usually for tungsten...silk thread to incandescent, uses for lamp which shines. The light bulb periphery by the glass make, maintains the filament at the vacuum, or under low...

  4. The brightness of the original bulb will not be changed. It is because by adding another bulb ...

  5. [ Bulb burnt out] means the bulb has been burnt because...it. It will then be broken down and will not give out light any more. [ Bulb short circuit] means the bulb has been by-passed, i.e...

  6. 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.

  7. 鎢絲燈泡冇分正負極。 應該係固定燈泡的 燈杯 所影響,燈杯尾部旁邊有圓型塑料的凸邊,中間係金屬物,通常係一個銅製的雞眼,提供燈泡和電池的導電功用。 由於電池正極為一凸起的圓點頭,可以同燈杯的金屬物雞眼接觸。 相反電池負極係平的,被燈杯的圓型塑料凸邊頂著,接觸不...

  8. 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...

  9. 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。

  10. 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...