Platinum is commonly used as a resistance thermometer since Platinum is relatively free from corrosive effects and has a high melting point. Suppose that at 20 oC the resistance of a Platinum wire is 164.2 Ω. When this wire is placed in a solution, the resistance of the wire becomes 187.4 Ω. What is the temperature of the solution? The temperature coefficient of resistivity of Platinum is α = 0.00393

Q: A 1.3-m long copper wire (resistivity 1.68x108 Q-m) has a resistance of 7 Q. What is the diameter…

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Q: Calculate the ratio of the resistance of 15.0 m of aluminum wire 2.3 mm in diameter, to 30.0 m of…

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A: Ans:- Image-1

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Q: Aluminum has a resistivity of 2.65 × 10-8 2 × m. What is the resistance of 15 m of aluminum wire…

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A: The variation of resistance with temperature is given by,

Q: An aluminum wire has a length of 27.0 m and a resistance of 4.30 2 at 20.0°C. Assuming a circular…

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Q: To what temperature must you raise a gold wire (c = 0.0034), originally at 20.0°C, to double its…

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Q: A copper wire is having a length of 8m and a radius of 32mm. The resistivity (p) of copper is…

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Q: A copper wire has a length of 2 meters and a cross-sectional area of 3×10^{−6} square meters. The…

A: To determine the resistivity of the wire, we need to use Ohm's Law, which states that the potential…

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A: Step 1:Step 2:Step 3:Step 4:

Q: 10. An aluminum wire (resistivity at 20°C of 2.65x10-8 2m, temperature coefficient of 0.00429/°C) is…

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Q: As part of a class project you are given 0.900 g of copper and asked to fabricate a wire with…

A: Mass of copper (m) = 0.9 g Density of copper (D) = 8920 kgm3Resistivity of copper (ρ) = 1.72×10-8…

Q: esistance depends on the size and shape of a conductor. We expect a long wire to have higher…

A: Given: ρ=12.08*10-8 Ωl = 14.22 mr = 1.33 m

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Q: An iron wire has a resistance of 78.7. m ohm at 20 degrees Celsius. When the wire carries a current,…

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Q: Resistance

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.