A piece of wire is doubled and its area of cross-section is reduced to half its value. Its resistivity will
Answers
Answered by
0
We know
R=ρAl , now area becomes half and length is double .
R1=ρ2A2l=ρA4l=4R
Answered by
0
Answer:
it's resistivity will stay the same, as resistivity of a material is constant
however, its resistance will increase to 4 times the original value, as resistance is directly proportional to length and inversely proportional to cross-sectional area
Explanation:
hope it helps
Similar questions