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Standard XII
Physics
Resistance of P-N Junction
Find the resi...
Question
Find the resistance of a hollow cylindrical pipe of length 100 cm and whose inner and outer radii are 10 cm and 20 cm respectively. Assume resistivity of the material to be 2 x
10
−
8
Ωm.
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Similar questions
Q.
Find the resistance of a hollow cylindrical pipe of length 1 m whose inner and outer radii are 10 cm and 20 cm respectively. Assume that the cylindrical pipe is made of a material of resistivity
2
×
10
−
8
Ω
m
.
Q.
A hollow cylinder of length
3
m
has inner and outer diameters are
4
mm
and
8
mm
respectively. The resistance of the cylinder is-
[specific resistance of the material
=
2.2
×
10
−
8
Ω
m
]
Q.
A hollow cylindrical pipe of length
10
cm
has inner radius
r
1
=
3
cm
and outer radius
r
2
=
12
cm
. The temperature difference between the inner and outer layer of cylindrical pipe is
100
∘
C
and the thermal conductivity of cylindrical pipe is
150
W/m
∘
C
. Find the rate of heat transfered (in
kW
) between inner and outer layers.
(Take
ln
2
=
0.693
)
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