1.

the resistance of a conductor wire x of length one metre is 5 homes calculate the resistance of the wire made by a material whose length is 4 times and area of cross section is five times that of wire x ​

Answer»

ANSWER:

CASE 1

length=x

area=A

resistivity=row

R=row×x/A=5

case 2

l=4x

A=5A

resistivity=row

R=4/5×row×x/A

=4/5x5=4 OHM



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