How does the resistance of a conductor depend on : 

(a) length of the conductor ? 

(b) area of cross-section of the conductor ? 

(c) temperature of the conductor ?

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1 Answers

Solution : 

(a) Resistance of a conductor increases (or decreases) with increase (or decrease) in the length of the conductor. 

(b) Resistance of a conductor decreases (increases) with increase (decrease) in the area of cross-section of the conductor. 

(c) Resistance of a conductor increases on raising the temperature and decreases on lowering the temperature. 

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