Tuesday, 14 February 2023

Worksheet 2 Electricity....Important and Easy Question @ CBSE @NEET Exam 100 % Success

 1. List the factors on which the resistance of a uniform cylinder conductor of given material depends.

And: Factors on which the resistance of a conductor depends:

(I) Length of conductor: 

Resistance is directly proportional to the length of conductor. This means resistance increase with increase in length of the conductor. 

This is why long wirescreate more resistance to the electric current.

(ii) Area of cross section: 

Resistance is inversely proportional to the area of cross section of the conductor. This means resistance decrease with increase in area of cross section of conductor and viceversa.

This is why, a thick copper wire create less resistance to electric current.

(iii) Temperature: Resistance is directly proportional to the temperature.

(iv) Nature of material: Resistance depends on nature of material. Some materials like silver are good conductor of electricity while some like plastic are bad conductor of electricity.


1 comment: