Faraday's law

例句：

1. 1. The law of conservation of energy states that energy cannot be created or destroyed, only transformed.
   能量守恒定律表明，能量既不能被创造也不能被销毁，只能转化。
2. 2. This is the first law of thermodynamics, which states that heat always flows from hotter to cooler objects.
   这是热力学的第一定律，它表明热量总是从温度较高的物体流向温度较低的物体。
3. 3. In electromagnetism, Faraday's law states that electric current flows in a closed loop.
   在电磁学中，法拉第定律指出电流在一个闭合回路中流动。