本题目来源于试卷: gc textbook chapter 18 Electric Currents，类别为 IB物理学
[问答题]
When a flashlight iscy,5pse c9 3ae0cd/ 0y*rokek operated, what is being used uphcc6)tloiy cdfg1w6jp/8 95t o(lgpy d 4,pp.: battery current, battery vg pi ty(,p1foll . /5w8jcpphdt co6dg6 y4)c9oltage, battery energy, battery power, or battery resistance? Explain.
参考答案:
Battery energy is what is being “used up”. As charges leave the battery terminal, they
have a relatively high potential energy.
Then as the charges move through the flashlight bulb, they lose
potential energy. The battery uses a
chemical reaction to replace the potential energy of the charges, by lowering
the battery’s chemical potential energy.
When a battery is “used up”, it is unable to give potential energy to
charges.
本题详细解析:
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