Two wires have the same length and the same resistance. One is made from tungste
ID: 1545556 • Letter: T
Question
Two wires have the same length and the same resistance. One is made from tungsten and other from aluminum. Obtain the ratio of the cross-sectional area of the tungsten wire to the cross-sectional area of the aluminum wire. Atungsten/Aluminum= Two wires have the same length and the same resistance. One is made from tungsten and other from aluminum. Obtain the ratio of the cross-sectional area of the tungsten wire to the cross-sectional area of the aluminum wire. Atungsten/Aluminum= Atungsten/Aluminum=Explanation / Answer
aluminium specific resistance be l area be al.
Tungsten be t and area be at.
Lengths are the same.
a l/al = t l/at.
at/ag = t/g
cross section relationship.= 5.6*10^(-8)/2.65*10^(-8)=2.11.
Area is almost double that of tungsten.
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