本题目来源于试卷: gc textbook chapter 18 Electric Currents，类别为 IB物理学
[问答题]
A 15-A fuse blows repeate ou3zf hl/ seke4l2/u9dly. Why is it dangerous to replace this fuseu2 7klqjtc vd0 fn;d(. with a 25-Aud7(q c kd.v2t fj;nl0 fuse?
参考答案:
The
15-A fuse is blowing because the circuit is carrying more than 15 A of
current. The circuit is probably
designed to only carry 15 A, and so there might be a “short” or some other
malfunction causing the current to exceed 15 A.
Replacing the 15-A fuse with a 25-A fuse will allow more current to flow
and thus make the wires carrying the current get hotter. A fire might result, or damage to certain
kinds of electrical equipment. The blown
fuse is a warning that something is wrong with the circuit.
本题详细解析:
暂无
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