字幕列表 影片播放 列印所有字幕 列印翻譯字幕 列印英文字幕 The simplest electric circuit is a light bulb and a battery. 燈泡與電池可組成最簡單的電路 The battery creates a force pushing the charged particles in the wire, 電池產生力量來驅動導線中的帶電粒子 causing them to flow in a loop around the circuit. 在迴路的導線中流動 The number of charged particles that pass by each second 每秒通過的電子數稱為電流(I) is what we refer to as the current. 因為電池讓電子帶有較高的電位能 The charged particles flow through the light bulb because the battery causes them 所以電子得以通過燈泡 to have a higher potential energy on one side of the light bulb than the other. 理與重力位能一樣 This is similar to how objects at higher elevations 水平高度較高的物體，它的重力位能較大 have a higher gravitational potential energy. 與電有關的位能稱為電壓(Voltage，電位能) This potential energy is what we refer to as voltage. 若把『電能』當作由電子搬運的盒子 If we visualize the potential energy as boxes that are attached to 可以看到當電子通過燈泡時 the charged particles, then we will see that 電能轉換成光(能) this energy is converted into light as the particles pass through the bulb. 電子在通過電池時 The charged particles regain their potential energy 重新獲得電能(電壓) as they move through the battery, which pushes 讓電子重新達到較高的電位 the charged particles to the higher potential. 當電池內部的能量耗盡 When the energy inside the battery is depleted, 電池將無法再產生電位能(電壓) the battery will no longer be able to create 也就是所謂的電壓 this potential energy which we call voltage. 電池在耗盡前會 A battery that has not yet been depleted ensures that 會確保它的二端 總是維持特定的電壓值 the voltage between its two terminals is always at a specific value. 若我們將許多電池並聯 If we place several batteries with the same voltage together in parallel, 就可以儲存(提供)更多電能 then this will result in more energy that is stored, 讓整體的使用時間延長 and this will give us more time before the battery is depleted. 若將電池串聯 If we instead place these batteries in series, 會使其電能(電壓)增加 this will cause their voltages to add, 使電子獲得更多的電能 resulting in a much higher potential energy for each charged particle. 通過燈泡的電壓增加 A higher voltage across the light bulb means 意味著通過的電流變大 that a higher current will pass through it. 這會使燈泡發出更多的光 This will cause far more light to be emitted by the light bulb, but 這也表示電池的耗損會更快 it will also mean that the energy in the batteries will be depleted much faster. 更多關於電壓，電流，電路 Much more detailed information about 的詳細內容及影片 voltage, current, and electric circuits is 請瀏覽此頻道 available in the other videos on this channel.