Question

you have two wires of identical dimensions made of materials A and C.if the resistance of wire made of C is 60 ohm.what is the resistance of the other wire made of material A

Answer 1

Answer:

Given :

There are two wires :-

=>Wire A & wire C

=>Dimensions of wire A =Dimensions of wire C

=>Resistance of wire C=60ohm

By using the formula,

$R \: = \alpha \frac{l}{a}$

Where l is the length of conductor and a is the area of cross section. R is the resistance and alpha is the Resistivity.

$Resistance \: of \: wire \: C \\ = 60ohm = \alpha \frac{l}{a}$

$Resistance \: of \: wire \: A \\ = \alpha \frac{l}{a}$

Therefore, the resistance of wire A =resistance of wire C=60ohm.