A wire of lenght l and resistance r is stretched so that the length is doubled and the srea of cross section is halved .How will its resistance and resistivity change
Answers
Answered by
1
Answer:
It's resistivity will be unchanged as it is a material dependent property. The resistance of the wire will be of 4 times the previous..
Answered by
0
Answer:
the length is doubled
the area of cross section is halfed .
when resistivity is constant ... the resistance will be 1/4th of the previous one
Similar questions