Electric Currents (id: 4ac2b9248)

本题目来源于试卷: Electric Currents，类别为 IB物理学

[填空题]
Lightbulb A is rated at 120 V and 40 W for househo40 *q+aa xe w+i0zewfv nn(p9rldnk6;o0szxcf,;q egh+-v3j t j applications. Lightbulb B is rated at 12 V and 40 W for automotive a3sjv+x,; gfj h-ke0tq;zn6ocpplications.
(a) What is the current through each bulb? $I_A$ =    A $I_B$ =    A
(b) What is the resistance of each bulb? $R_A$ =  $\Omega$ $R_B$ =  $\Omega$
(c) In one hour, how much charge passes through each bulb? $Q_A$ =    C$Q_B$ =    C
(d) In one hour, how much energy does each bulb use?    $ \times10^{5 }\;J$
(e) Which bulb requires larger diameter wires to connect its power source and the bulb?  ----待选择----Bulb BBulb A 

参考答案:
空格1: 0.33±2%  空格2: 3.3±2%  空格3: 360±2%  空格4: 3.6±2%  空格5: 1200±2%  空格6: 12000±2%  空格7: 1.44±2%  空格8: Bulb B 


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