1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard XII
Physics
Dependence of Resistance on Temperature
If resistance...
Question
If resistance of wire at
50
∘
C is 5 R
Ω
and
100
∘
C is 6R
Ω
, find resistance of
0
∘
C.
Open in App
Solution
We know that,
R
t
=
R
0
(
1
+
α
t
)
Where
R
1
is the resistance of the wire at
t
0
C
R
0
is the resistance of the wire at
0
0
C
and
α
is the temperature coifficient of resistance.
⇒
R
50
=
R
0
(
1
+
50
α
)
−
−
−
−
−
(
i
)
R
100
=
R
0
(
1
+
100
α
)
−
−
−
−
−
−
(
i
i
)
From
(
i
)
,
R
50
−
R
0
=
50
α
R
0
−
−
−
(
i
i
i
)
From
(
i
i
)
,
R
100
−
R
0
=
100
α
R
0
−
−
−
−
(
i
v
)
Dividing
(
i
i
i
)
by
(
i
v
)
, we get
R
50
−
R
0
R
100
−
R
0
=
1
2
Here
R
50
=
5
Ω
and
R
100
=
6
Ω
∴
5
−
R
0
6
−
R
0
=
1
2
or
6
−
R
0
=
10
−
2
R
0
or,
R
0
=
4
Ω
Suggest Corrections
1
Similar questions
Q.
If the resistance of a conductor is
5
Ω
at
50
∘
C
and
7
Ω
at
100
∘
C
, then the mean temperature coefficient of resistance is
Q.
The resistance of a wire is 5 ohm at
50
∘
C and 6 ohm at
100
∘
C. The resistance of the wire at
0
∘
C will be:
Q.
If the resistance of a conductor is 5
Ω
at 50
o
C & 7
Ω
at 100
o
C, then mean temperature coefficient of resistance (of material) is
Q.
The resistance of a wire is
4.2
Ω
at
100
∘
C
and the temperature coefficient of the material is
0.004
/
∘
C
. Its resistance at
0
∘
C
is
Q.
Resistance of
galvanometer
Shunt resistance
A) 200
Ω
a) 50
Ω
B) 100
Ω
b) 20
Ω
C) 300
Ω
c) 50
Ω
The increasing order of sensitivity of ammeter is
View More
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
Dependence of Resistance on Temperature
PHYSICS
Watch in App
Explore more
Dependence of Resistance on Temperature
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
AI Tutor
Textbooks
Question Papers
Install app