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What is Voltage [Audio Physics for Beginners]

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Audio Basis - educational articles

Read in this article, that is voltage, in context of audio as physics part.

What is Voltage
 

Electricity is field that can move electrons.

Let’s to imagine electrons as small balls.

The field is difference of voltage levels.

The difference create mechanical force that move electrons.



Let’s look example that well known everybody.

If a ball is lying on the ground, it have zero voltage.

If we lift the ball under ground, we can consider difference between the lifted ball and ground one like «voltage».
 

Voltage is potential of electron,
like potential of ball that held in a hands above ground

Voltage audio signal

 

 

If we release the ball, it fall to ground due the «voltage». And the ball beat ground.

If we lift the ball upper than before, it will punch the ground harder.

So upper position have higher «voltage».

In the example you may replace the gravitation to electric field.

Voltage is called as U.

Audio signal usually considered as altering of the voltage in the time.
 

Changing voltage of the audio signal in time.

Voltage in time

 

In the next articles we will consider step-by-step how voltage relate to sound.

Electric current >

 

Yuri Korzunov,

Audiophile Inventory's developer

 

 


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