How will the resistance of a conductor change when its length is tripled by stretching it?
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Resistivity of a conductor such as wire will increase by nine times when it is stretched by three times. It is directly proportional to the length and inversely proportional to diameter. When the conductor is stretched, the diameter decreases and the length increase increasing resistivity. So the resistivity will also triple.
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the resistance of a conductor is directly proportional to the length of that conductor
So if the length is tripled then its resistance will also increases by 3 times
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