Question

Resistance of a given wire of length '/' is 3. The wire is stretched uniformly such that its length becomes 2/. Find the new resistance of the stretched wire.​

Answer 1

Answer:

the new resistance will be 6ohms

Explanation:

we know that length is directly proportional to the resistance.

so,

r1/r2 =l1/l2

3/x= l/2l

3/x = 1/2

×= 6 ohms

here x is the new resistance of the wire