Answer / ali asghar

As we know

R= p*L/A
if resistance decreased by 10 % it mean new resistance is
L'=0.9L
And Area is increased by 10 % because volume will remain constant so new area will be
A' = 1.1A
so
R'=p* .9L/1.1A =.9R/1.1=0.81R
so change in resistance is = 1-0.81=0.91=0.91*100 %= 19 %
so resistance decreased by 19%

Answer / aurangzaib

percentage decrease in the resistance will be 19%

Answer / ashlesha

R=p*l/A
Length is decreased by 19% so
L'= 90%of l
=0.9l
Volume remains the same and area increased by 10%
So, new area=1.1A
R=0.9l/1.1A=081R
Change in resistance=1-0.81
=0.19
0.19=19%

Answer / adeel

than-Q
Aamir Bhai

Answer / aamir ali

Wire is compressed it means volume will be constant (V= Area
x Length) if length is decreased by 10% then area will
increase by 10% (Because volume is constant) suppose
l=length, a=area R=Resistance p=rho, Then R=p*(l/a)
Now if length is compressed by 10% then length=0.9*l and
area=1.1*a
Resistance=p*(.9l/1.1a)=0.8R
This means that Resistance will be decreased by 20%
Hope I answered your Question

Answer / rupesh

the answer is 27%

Answer / s.sarkar

Resistance will be decrease by 10%

Answer / akash

I think ,the basic equaction
Is that. R directly prposnal to l
So r=10%

for distribution line ratio of x/r 1.<0.1 2.>10 3.>1 4.<0.01

3 Answers   HAL, HPPSC,

how we design a pannel to start 10HP motor with the help of star delta starter?

0 Answers  

why voltage coil in wattmeter called as pressure coil why the pressure term is used in wattmeter?

1 Answers   NPCIL,

Describe the difference between a microcontroller and a general purpose computer.

2 Answers   Siemens,

How much CTs are required to measure th curent in DOL starting of motor?PLs explain.

1 Answers  

How many types of isolator is available for H.T.lines? which one is best for sub-station?

4 Answers  

Why syn. Generators are used for the production of electricity?

0 Answers  

what is the most probable reason of failure of current transformer?

2 Answers   L&T,

whats the diff b/w mpcb and mcb?weather it trips on single phasing or not.

9 Answers   Electra Power, Essar,

1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.

0 Answers  

Minimum IR value of 1.1 kv grade 3.5c (300, 240,185,150,120,95,70,50,35,25) sqmm Aluminium XLPE cable and 4c (16, 10,6 & 4) sqmm cu arm cable between RY,YB,BR,RN,YN,BN,RE,YE,BE & NE.

0 Answers   Gasco,

What is given by the definition in BIL IMP/PF = 950/395 kV. This was found in a name plate of a power transformer.

0 Answers   AES,