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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.

# 電池能量和功率

• 16 3
Amy.Lin 發佈於 2021 年 01 月 06 日