this weekend i saw 2 instances of variable resistors in the world. a variable resistor is a strip of metal connected to a circuit. This piece of metal can change the overall resistance of the circuit by having its length changed. This change in length determines the amperage of the circuit and thus the ending result. one place i saw this resistor was in my kitchen where we have a dimmer switch. This switch dims the lights by lengthining the resistor. Also another applicati
on of variable resistors i saw put to use was in my car. When turning up the volume on my stereo i noticed that the volume switch was also a variable resistor. by turning the nob clockwise i shorten the resistor, thus increasing the output of the circuit. this leads to more charge reaching the speaker, directly resulting in louder sound.
on of variable resistors i saw put to use was in my car. When turning up the volume on my stereo i noticed that the volume switch was also a variable resistor. by turning the nob clockwise i shorten the resistor, thus increasing the output of the circuit. this leads to more charge reaching the speaker, directly resulting in louder sound. 
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