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  • 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.

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

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B1 中級 中文 美國腔 電池 電壓 電子 燈泡 電流 電路

電池能量和功率

  • 12 2
    Amy.Lin 發佈於 2021 年 01 月 06 日
影片單字