what do you meanby resistance and resistivity
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Resistance is the ratio of the potential difference and the current flowing through it. It is the quantity to resiste the flow of current.
Resistivity is the property of the conducter fir resistance.
Resistivity is the property of the conducter fir resistance.
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if 'v' be the potential difference between thetwo terminals of a conductor and'i' be the current thorough it, then,
v/i=constant=R
in another word,
Ratio of v and i is called resistance denoted by R
R =v/i
________________
now resistivity
Resistance of a conductor varies directly as its length and inversly as it's area ot cross section.
where raw is the resistivity
R=raw× l/a
v/i=constant=R
in another word,
Ratio of v and i is called resistance denoted by R
R =v/i
________________
now resistivity
Resistance of a conductor varies directly as its length and inversly as it's area ot cross section.
where raw is the resistivity
R=raw× l/a
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