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Standard IX
Physics
Resistivity
Calculate the...
Question
Calculate the resistance of a copper wire of length 1m and area of cross section 2 m m². Resistivity of copper wire is 1.7 × 10‐⁸ ohm-m
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Similar questions
Q.
Calculate the electric field in a copper wire of cross-sectional area 2.0 mm
2
carrying a current of 1 A.
The resistivity of copper = 1.7 × 10
–8
Ω m
Q.
A copper wire of cross-sectional area
2.0
m
m
2
, resistivity =
1.7
×
10
−
8
Ω
m
, carries a current of 1 A. The electric field in the copper wire is:
Q.
What length of a copper wire of cross-sectional area 0.01 mm
2
will be needed to prepare a resistance of 1 kΩ? Resistivity of copper = 1.7 × 10
–8
Ωm
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