Question
Sun September 15, 2013

# wat is the difference b/w resistance n resitivity???

Expert Reply
Mon September 16, 2013
Resistance is the obstruction offered to the flow of current by a conductor.
Resistivity is the obstruction offered to the flow of current by UNIT AREA OF the conductor.

So basically, resistance is the property of the object (say a copper wire), whereas resistivity is the property of the substance (copper).

And so resistance depends upon the properties of the object, whereas resistivity depends upon the properties of the metal.

So for example take two objects A and B made of aluminium. Both are of a different size.
The resistance of A & B will be different.
But the resistivity will be the same.
Related Questions
Mon November 20, 2017

# Q1WHAT IS NEED OF RESISTANCE IN CIRCUIT   Q2 WHY THE HEAT IS GENRATED WHEN CURRENT IS FLOW   Q3-DERIVE THE FORMULA OF CALCULATING TOATAL RESISTANCE IN PARALLELAND SERIES   Q4-WHY THE CURRENT IS NOT STABLE BUT VOLTAGE IS STABLE

Wed November 08, 2017

Home Work Help