Nichrome wire of resistivity omega stretched to make 10% longer what is its percentage change in its resistance?
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R = ρ(L/A) Since 'Resistivity' is a charactersitic property of wire, it does not change with change in length or area. Hence it will remain same for any length of wire. When the length is stretched to make it 10 % longer, its length and cross sectional area will change which will affect the resistance of wire.
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