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Physics
Physics
Problem
For a metallic conductor having resistance
R
0
R_0
R
0
at temperature
T
0
T_0
T
0
, which expression gives its resistance
R
T
R_T
R
T
at temperature
T
T
T
? a)
R
T
=
R
0
α
(
T
−
T
0
)
R_T = R_0\,\alpha (T-T_0)
R
T
=
R
0
α
(
T
−
T
0
)
b)
R
T
=
R
0
[
1
−
α
(
T
−
T
0
)
]
R_T = R_0\,[1-\alpha (T-T_0)]
R
T
=
R
0
[
1
−
α
(
T
−
T
0
)]
c)
R
T
=
R
0
[
1
+
α
(
T
−
T
0
)
]
R_T = R_0\,[1+\alpha (T-T_0)]
R
T
=
R
0
[
1
+
α
(
T
−
T
0
)]
d)
R
T
=
R
0
[
1
+
α
(
T
+
T
0
)
]
R_T = R_0\,[1+\alpha (T+T_0)]
R
T
=
R
0
[
1
+
α
(
T
+
T
0
)]
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