Check sibling questions

electrical-resistivity-teachoo.png

How does the resistance of a wire vary with its area of cross-section?

Answer

 

We know that

R =  ρ l/A

Where

R = Resistance, 

ρ = Resistivity of the material

L = length of the wire

A = Area of cross-section of the wire

 

Hence, resistance is inversely proportional to the area of cross-section

549 people joined Teachoo Black. What are you waiting for?

CA Maninder Singh's photo - Expert in Practical Accounts, Taxation and Efiling

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo