Question

A nichrome wire of length l and area of cross-section a/4 has a resistance R. Another

nichrome wire of length 3l and area of cross-section a/2 has a resistance of R1. Find

the ratio of R1 : R​

Answer 1

R=pL/A

R=4pl/A

R1=p3×2l/A=6pl/A

R1/R=6l/4l

R1/R=3/2

I hope this helps( ╹▽╹ )