English-Chinese/Electromagnet

Electromagnets are temporary and man-made magnets. The magnet has a magnetic force when current is passed through the coil. The coil is called a solenoid. The strength of the magnet is proportional to the current flowing in the circuit. The electricity passing through the wire is called the current. Current is the flow of electrons, and electrons are negatively charged particles. Electromagnets have different uses. A simple example is an electromagnet that picks up iron, nickel and cobalt.

电磁体 是 临时的 和 人造的 磁体. 当 电流 通过 线圈时 磁体 才有 磁力. 线圈 称为 螺线管. 磁体的 强度 与 电路中 流动的 电流 成比例. 通过 电线的 电 称为 电流. 电流 是 电子的 流动，电子 是 带负电的 粒子. 电磁体 有 不同用途. 简单的 例子 是 电磁体 可以 拾取 铁，镍 和 钴.