gc textbook chapter 18 Electric Currents (id: cdb456f85)

本题目来源于试卷: gc textbook chapter 18 Electric Currents，类别为 IB物理学

[填空题]
A 100-W, 120-V lightbulb hacpa,s3s/: wt9 yn lf-ps82 t,d ba7r izn2bl/sj a resistance of $12\Omega$ when cold (20$^{\circ}\,C$) and $140\Omega$ when on (hot). Calculate its power consumption at
(a) the instant it is turned on,    W
(b) after a few moments when it is hot.    W

参考答案:
空格1: 1200±2%  空格2: 103±2% 


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