what is resistivity ...... how to do numericals of it
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it is the measure of resisting power of specified material to flow of electricity. resistivity moreover depends on (i) material and (ii) Temperature
there's only one formula which has the value of resistivity which is
R=ρl/a
.•. ρ=Ra/l
where R is resistance
a is area of cross section
and l is length of wire
there's only one formula which has the value of resistivity which is
R=ρl/a
.•. ρ=Ra/l
where R is resistance
a is area of cross section
and l is length of wire
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