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Byju's Answer
Standard XII
Chemistry
Resistance and Resistivity
Define resist...
Question
Define resistivity of a material .A cyclinder of a material if 10 cm long and a cross section of 2sq.cm .If its resistance alongvthe length be 20ohm what will be resisivity in number and units?
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Solution
Dear student
R
=
ρ
×
l
A
r
e
s
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.
20
=
ρ
×
10
c
m
2
c
m
2
20
=
ρ
×
10
2
c
m
(
20
5
)
Ω
×
c
m
=
ρ
ρ
=
4
Ω
c
m
R
e
g
a
r
d
s
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Similar questions
Q.
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m
2
and length
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its resistance is
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