本题目来源于试卷: Electric Currents，类别为 IB物理学
[问答题]
When an electric cell is connected to a circuit, electro9))oo jq) pv s7vm1xsyns flow away from g9; s1n mna; d6gwnf(rthe negative terminal in the ca;nmsdw;gf(9 6g 1nn rircuit. But within the cell, electrons flow to the negative terminal. Explain.
参考答案:
In
the circuit (not in the battery), electrons flow from high potential energy (at
the negative terminal) to low potential energy (at the positive terminal). Inside the battery, the chemical reaction
does work on the electrons to take them from low potential energy to high potential
energy (to the negative terminal). A
more chemical description says that the chemical reaction taking place at the
negative electrode leaves electrons behind on the terminal, and the positive
ions created at the negative electrode pull electrons off the positive
electrode.
本题详细解析:
暂无
| 
