Question

State the factors on which, at a given temperature, the resistance of a cylindrical conductor depends. State the SI unit of resistivity.

CBSE Class X Science SA 1 ( 2 marks)

Answer 1

Factors on which the resistance of a cylindrical conductor depends are :

(i)   Length of the conductor                                                                 

(ii)  Area of cross-section of the conductor                                             

(iii) Nature of the material                                                                    

SI unit of resistivity is ohm-m.

Answer 2

factor on resistance of cylindrical conductor depends upon are

1. length of conductor
2. area of cross section of conductor
3. nature of material

SI unit of resistivity is ohm's