Question

A nichrome wire has a resistance of 5 ohm. Find the resistance of another nichrome wire whose length is 4 times and the area wa cross section 3 times of the first wire... please ans.................​

Answer 1

Answer:

et the length of the first nichrome wire=l then the length of the second nichrome wire =4l,...................................let the cross section area of the first wire =A then,the cross section area of the second wire =3A.....................let resistance of the first wire =R1 and resistance of second wire =R2....then,R1/R2=(p×l/A)/(p×4l/3A)=3/4............now,it is given that resistance of first wire is 5 ohm so,R1/R2=3/4=>5/R2=3/4...=>R2=20/3=6.67 ohm(ans

Explanation:

Answer 2

Answer:

ANSWER = 6.67 (OHM)

Explanation:

PLEASE MARK IT AS BRAINLIEST