Question

The resistance of a wire is10 . Its length is increased by 10% by stretching. The new resistance will now be

(a)
12

(b)
1.2

(c)
13

(d)
11
please give me correct answer
it will be marked as brainlist and the answer is to be done in note book
and please attach it's pic​

Answer 1

Answer:

the resistance of wire is 10 ohm

Let say Earlier Length = L

& Area = A

=> Volume = AL

R = ρ L/A

=> ρ L/A = 10

length is increased by 10% by stretching

=> new Length = L + (10/100)L = 1.1 L

Volume Remains Same

=> New A rea = AL/ 1.1 L = A/1.1

New Resistance = ρ  1.1 L /(A /1,.1)

= 1.21 ρL/A

= 1.21 * 10

= 12.1 Ω

Step-by-step explanation:

there are 2 answers........ right one which is suitable..for u

Answer 2

Answer:

refers to the attachment