DC Circuits (id: 64fd0d4db)

本题目来源于试卷: DC Circuits，类别为 IB物理学

[填空题]
A three-way lightbulb can produce 50 W, 100 Wq80 n p:0zwm/djvh-jb, or 150 W, at 12-zvixp0- nkm:d- hw+i 0 V. Such a bulb contains 0ii+ -kx:-pwzd hn-mv two filaments that can be connected to the 120 V individually or in parallel.
(a) Describe how the connections to the two filaments are made to give each of the three wattages.
50 W output use  ----待选择---- higher-resistance filament lower-resistance filamentfilaments in parallel 
100 W output use  ----待选择---- higher-resistance filament lower-resistance filamentfilaments in parallel 
150 W output use  ----待选择---- higher-resistance filament lower-resistance filamentfilaments in parallel 
(b) What must be the resistance of each filament?
$R_{50W}$    $\Omega$
$R_{100W}$    $\Omega$

参考答案:
空格1: higher-resistance filament  空格2: lower-resistance filament|filaments in parallel  空格3: filaments in parallel  空格4: 288±2%  空格5: 144±2% 


本题详细解析:

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