1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard XII
Physics
Semiconductors and Superconductors
At which temp...
Question
At which temperature the resistance of a copper wire will be double of the resistance at
0
o
C
? (Resistance temperature coefficient is
4.0
×
10
−
3
0
C
−
1
) ?
Open in App
Solution
R
=
R
0
(
1
+
α
(
T
−
T
0
)
)
=
2
R
0
=
R
0
(
1
+
α
(
T
−
0
)
)
=
2
=
1
+
α
(
T
−
0
)
=
1
=
α
T
=
1
4
×
10
−
30
=
100
4
×
10
28
=
25
×
10
28
0
C
We get
,
=
25
×
10
28
0
C
Suggest Corrections
0
Similar questions
Q.
The resistance of an iron wire and a copper wire at
20
o
C
are
3.9
Ω
and
4.1
Ω
respectively. At what temperature will the resistance be equal ? Temperature coefficient of resistivity for iron is
5.0
×
10
−
3
K
−
1
and for copper it is
4.0
×
10
−
3
K
−
1
. Neglect any thermal expansion.
Q.
The temperature coefficient of resistance of a wire at
0
o
C
is
0.00125
o
C
−
1
. At
25
o
C
its resistance is one ohm. The resistance of the wire will be
1.2
o
h
m
at
Q.
At what temperature will the resistance of a copper wire become three times its value at
0
0
C? [Temperature coefficient of resistance for copper =
4
×
10
−
3
p
e
r
0
C
]:-
Q.
The temperature coefficient of resistance of wire is
12.5
×
10
−
4
/
C
0
. At 300K the resistance of the wire is 1 ohm. The temperature at which resistance will be 2 ohm is
Q.
A copper coil has a resistance of
2.43
Ω
at
50
o
C
. Find its resistance at
60
o
C
. The resistance temperature coefficient of copper is
0.0043
per
o
C
at
0
o
C
.
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
Semiconductor and Superconductor
PHYSICS
Watch in App
Explore more
Semiconductors and Superconductors
Standard XII Physics
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Solve
Textbooks
Question Papers
Install app