连接正负极Connection of positive and negative poles

不要把物理公式看作数学公式，请也尊重自然的经验法则。
Don't see the physical formulas as mathematical formulas, please also respect the experience rules of nature.

连接正负极 Connection of positive and negative poles

电流定义 Electric Current Definition:

\(I= \frac{Q}{t}\)

\(I\) represent electric current in amperes \((A).\)
\(Q\) represent electric charge in coulombs \((C).\)
\(t\) represent time in seconds \((s).\)

欧姆定律 Ohm's Law

\(I=\frac{V}{R}\)

物理: V电压 R电阻 I电流 Intensité(由法国物理数学家安德烈-马里·安培命名)
Physics: Voltage Resistance Intensité(intensity, electric current)(the current, named by André-Marie Ampère)

当\(R\approx 0\)(短路)(\(\approx\)大概是一个主要用于物理的数学符号)
When \(R\approx 0\)(short-circuit)(\(\approx\) must be a mathematical sign which is most used in physics)

\(I \to \infty\)(物理中的\(\infty\))
\(I \to \infty\)(\(\infty\) in Physics)

功耗 Power Dissipation

电路中耗散的功率（P）由下式给出：
The power (P) dissipated in a circuit is given by:
\(P=V\cdot I\)

所以 \(P \to \infty\)，会发热
So \(P \to \infty\), it heats

为什么在短时间内它不会损坏(自然现象) Why in a short time it doesn't damage(natural phenomena)

重新设置问题: 为什么在大约1-2秒之后正常连接, 半导体元件/电子元件/晶体管/导线依然功能完好？
Reformate the problem: Why after 1-2 seconds then correctly connected, will semiconductor components/electronic components/transistors/wires still function?

\(P=I^2\cdot R\)

因为阈值电流 Because of Threshold Current(\(I_{th}\))

热力学：Thermodynamics：

温升:Temperature Rise: \(\Delta{T}\)
热阻:Thermal resistance: \(R_{th}\)
\(P=\frac{\Delta{T}}{R_{th}}\)

焦耳定律: Joule's Law
\(Q=I^2Rt\)
heat Q(/J(oule)), current I(/A), Resistance R(/\(\Omega\)),time t(/s)

So it will take some time to be damaged.