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What Would Be the Effect on the Resistance of a Metal Wire Of: Increasing Its Diameter?

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Question

What would be the effect on the resistance of a metal wire of:  

 increasing its diameter? 

 

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Solution

The resistance of a conductor is inversely proportional to its area of cross-section, i.e. R α 1 / A. So on increasing its diameter, its resistance will decrease.

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Chapter 4: Electricity - Exercise 4

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Lakhmir Singh Physics [English] Class 10
Chapter 4 Electricity
Exercise 4 | Q 20.2
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