5 The resistivity of Nichrome is about 100 times that of copper, a typical good conductor. a copper wire of the same radius would have a resistance per unit length of only 0.052 2/m, -m length of copper wire of the same radius would carry the same current (2.2 A) with an tage of only 0.115 V. its resistance to oxidation, Nichrome is often used for heating elements in toasters, irons, and aters. N Would replacing the Nichrome with copper wire of the same size result in a higher current rrent? er current same current current CE IT orked example above to help you solve this problem. O Calculate the resistance per unit length of a 44 gauge nichrome wire of radius 0.642 mm. 22/m If a potential difference of 11.6 V is maintained across a 1.00 m length of wire, what is the rent in the wire? A The wire is melted down and recast with triple its original length. Find the new resistance R a multiple of the old resistance Ro. Ro

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Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.