Question

The resistance of a conducting wire x
of length Im is 5ohm calculate the
resistance of the wire made by the
same material whose length is the
4 times and area of cross-section
is 5 times that of wire x.
[At same temperature]​

Answer 1

Answer:

4Ω

Explanation:

$R=$ρ $l/a$

$R1= r l/a=5\\R2=r 4l/5a\\R1/R2= 5/x=5/4\\R2= 4$