Last Updated On 16-03-2023 - By Jeesha Sara
A copper wire is stretched to make it 0.5% longer. The percentage change in its electrical resistance if its volume remains unchanged is:
|
a. |
2.5% |
b. |
0.5% |
|
c. |
1.0% |
d. |
2.0% |
Question ID - 50048 :- A copper wire is stretched to make it 0.5% longer. The percentage change in its electrical resistance if its volume remains unchanged is:
a.
2.5%
b.
0.5%
c.
1.0%
d.
2.0%
A copper wire is stretched to make it 0.5% longer. The percentage change in its electrical resistance if its volume remains unchanged is:
|
a. |
2.5% |
b. |
0.5% |
|
c. |
1.0% |
d. |
2.0% |
and volume (v) = Al.
=
=1%Next Question :
A parallel plate capacitor is made of two square plats of side ‘a’, separated by a distance d (d<<a). The lower triangular portion is filled with a dielectric of dielectric constant K, as show in the figure. Capacitance of this capacitor is:
|
a. |
|
b. |
|
|
c. |
|
d. |
|
ln K
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