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How does a volume knob work or what happens to make the sound increase when the knob is turned?
Wiki User
∙ 14y ago
They key to volume control is a variable resistor.
A variable resistor uses a resistance track with connections at both ends. There is wiper that moves along the track as the volume knob is turned. The tracks are usually rotary for volume knobs, or tracks for volume sliders.
The variable resistor may be used as a rheostat, which means that only two terminals are used (the wiper and one end of the track). By turning the knob, the wiper sweeps across the track, which will effectively vary the resistance from 0 to maximum. A rheostat is usually used to vary current so they would be useful for varying the brightness of a lamp. A variable resistor can also be used as a potentiometer, which uses all three connections (both ends of track and wiper). If you connect the track terminals across a power supply, then the wiper terminal is used to provide a voltage, which can be varied from 0 to the maximum (the supply voltage). Potentiometers are usually used for amplifiers.
Hope this helps
Wiki User
∙ 14y ago
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What happens to volume as decibels increase?
More decibels means that the sound volume increases.
When you turn down the volume what happens to the sound waves' amplitude?
Intensity of sound is dealt as volume in case of radio sets. Intensity is directly proportional to the square of amplitude. So as volume is turned down, intensity is reduced and so the amplitude is decreased.
How do you increase the intensity of sound waves from a radio?
Increase the volume.
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how do i increase the volume on my nokia 6085. I can barely hear it when it rings
What happens to the volume of sound as the amplitude get larger?
The greater the amplitude of a sound wave the louder the sound.
If a sound gets louder does the wavelength of the sound it produces increase?
No. The length of a sound wave is it's frequency. Volume will increase the wave's AMPLITUDE.
I have picture but no sound what do i do.?
Increase the volume. Failing that, buy a new set.
Which two properties of a sound wave change when a sound gets louder?
It was when the air hit the wave and it move to another direction
What happens to the volume of a sound wave as its amplitude decrease?
You mean by the word 'volume' the intensity of sound wave. Intensity is directly proportional to the square of the amplitude.
What depends on the loudness of sound of a sound wave?
The 'Loudness' of a sound wave is dependent on its Amplitude, hence why we have 'amplifiers' to increase the volume of something.
How does turning up a stereo increase the volume of the sound that is heard?
speakers vibrate farther
Will a USB 2.0 to 3d audio sound card adapter increase the volume on PC?
No
