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

  1. Class 10
  2. Chapter 12 Class 10 - Electricity

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.