The Resistance of a Conductor of Length X is R. If Its Area of Crosssection is A, What is Its Resistivity? What is Its Unit? - Science and Technology

The resistance of a conductor of length x is r. If its area of crosssection is a, what is its resistivity? What is its unit?

Solution

Resistivity of a conductor, ρ = RA/L
Here, L = x, R = r and A = a
therefore  ρ = ra/x
The unit of resistivity is ohm-metre (Ω m).

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APPEARS IN

Balbharati Science and Technology 9th Standard Maharashtra State Board
Chapter 3 Current Electricity
Exercise | Q 6 | Page 45