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Find the resistance of the wire of length 10m having a diameter of 1.3×10^-3m .(assume resistivity of the material of the wire tobe 4.5×10^-7ohm m?
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Find the resistance of the wire of length 10m having a diameter of 1.3...
Calculation of Resistance of a Wire

Given:
- Length of the wire (l) = 10m
- Diameter of the wire (d) = 1.3×10^-3m
- Resistivity of the material of the wire (ρ) = 4.5×10^-7ohm m

Formula:
The formula to calculate the resistance of a wire is:
- Resistance (R) = (ρ*l) / A
Where,
- ρ is the resistivity of the material of the wire
- l is the length of the wire
- A is the cross-sectional area of the wire
- d is the diameter of the wire
- A = π * (d/2)^2

Calculation:
- Substituting the given values in the formula,
- A = π * (1.3×10^-3/2)^2
- A = 1.326×10^-6 m^2
- R = (4.5×10^-7 * 10) / 1.326×10^-6
- R = 3.40 Ω

Answer:
The resistance of the wire is 3.40 Ω.
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Find the resistance of the wire of length 10m having a diameter of 1.3×10^-3m .(assume resistivity of the material of the wire tobe 4.5×10^-7ohm m?
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