1.

State the laws of resistance. 

Answer»

Laws of resistance : 

1. Resistance of a conductor is directly proportional to its length R α 1 

2. Resistance of a conductor is Inversely proportional to its area of cross-section R α 1/a 

3. Resistance of a conductor depend upon its nature i.e. copper has less resistance than iron. 

4. Resistance of a conductor increases with increase in temperature i.e. resistance of filament of a bulb is more when lighted as compared to when it is not lighted.



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