define resistance wrait its formula unit
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Explanation:
Resistance is the ability of the conductor to resist the flow of electric current through it. SI unit of resistance is Ohms written by symbol Ω
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Resistivity - It is a measure of resistivity power of a specified material to the flow of an electric current.
R=ρALρ=LRA
where R= resistivity
A= Area of cross section
L= Length of wire
[ρ]=ohm[mm2]
ρ=ohm.meter[S.Iunit]
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