Question

An AI wire of resistance 160 ohm is compressed to four times its length find it's new resistance
pls answer fast and in detail
thank you in advance your help is valuable...​

Answer 1

Answer:

Resistance, R = p l/A

Where p = resistivity, l = length, A = Area

So, p = constant and A = constant

Resistance R is directly proportional to l

Thus, R' = 1/4R (as length compressed to 4 times)

R' = 40 ohm , R' = new resistance

hope this will help you