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  1. Since the bulbs are working at their rated valeus, secondary coil...efficiency = 80/100 x 100% = 80% 2010-04-14 14:10:02 補充: Yes, since those bulbs are in parallel, they have the common voltage across them

  2. ...ae7c7622d4036158088995/z118658398.bmp Q : R = 1Ω, VR = 0 ~ 4Ω, Bulb = 4Ω & B = 3V A : if the VR set to 4...

  3. ... other one will have the same brightness as before. In a parallel circuit, each bulb is connected to the power source (the battery) independently. The...

  4. 這問題可以說是資料不足 ! 兩個 BULB 的電路, *{兩個 BULB 的瓦數(WATTS)相等...! 2009-09-19 20:47:52 補充: 更正 但該兩個 BULB 如並聯後再和電路並聯後接入 9 V 電壓 在該...

  5. maybe your light bulb not work try to connect the bulb to the cell directly and see if it lights up...

    分類:科學及數學 > 化學 2007年05月05日

  6. 會 設果個 bulb 既resistance係 2 ohm 供電電壓係12v 原先果個circuit V = I R...2+1) I = 4 (A) 那麼就會有2 A流過parallel 的其中一個 bulb Power = I^2 R = 8W 改變後果個circuit , 由兩個series...

  7. no need to do photosynthesis for synthesis food in bulb . the onion use the leave upper the solid to do photosynthesis, and then transport the food to the bulb

    分類:科學及數學 > 生物學 2007年09月16日

  8. ...大可問問老闆有沒有得賣。 至於Fuse tester,我就聞所未聞,無可奉告。 Bulb tester...你是否指水電舖中用來試燈的?買不到的。 ◇如你真的見過真正的...

  9. ...=I1+I2+I3+I4...... 如果多些 Light Bulb Add In Parallels,因"每個負載(元件)的電流...

  10. ...a low resistance, it causes electric current to by-pass bulb A, leaving effectivel only bulb B in the circuit...off. Thus cutting off the current and peventing the bulb from damage. 2011-10-12 22:46:57 補充: 天同,我答第一題...