Electric Currents (id: 7cd846cfd)

本题目来源于试卷: Electric Currents，类别为 IB物理学

[填空题]
The heating element m ,a,1x;x56b bsj h/nvpid,diof a 110-V,gg :e hrd*+i zqp)mbu;s47 de6 1500-W heater is 5.4 m long. If it is made of iron,+gmz )g:4d* 7b u; se6qdprhie what must its diameter be?    $ \times10^{ -4}\;m$

参考答案: 2.9±2%


本题详细解析:

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