The temperature coefficient of platinum is 3.9×10-3/C°. If a platinum wire has a resistance of R at room temperature (25°C), to what temperature (in °F) must it be heated in order to double its resistance to 2R?

Q: A coil of wire has a cold resistance (20°C) of 0.25 2 and the temperature coefficient is found to be…

A: The resistance of an object depends on its length, area, and an intrinsic property of the material…

Q: Digital medical thermometers determine temperature by measuring the resistance of a semiconductor…

A: The relation between the resistance and the temperature is given by, Here, Ro is the resistance of…

Q: Electric field through a copper wire is found to be 0.18 V/m. If the copper wire has 8.46x102…

A: Drift velocity is the average velocity at which electrons move through a conductor under the…

Q: A length of aluminum wire has a resistance of 14.00 at 32.0°C. When the wire is warmed in an oven…

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Q: As the temperature of a metal rod varies, so does the resistance and the dimensions of the rod. If a…

A: At T=20°, the resistance of the rod is given by R20=ρ20l20A

Q: n electronic device designed to operate at any temperature in the range from -17.6°C to 57.9°C…

A: The relation between resistance and temperature is given by:- ∆R= Rα∆T Where; ∆R= change in…

Q: A three quarter disk that extends from Φ = 0 to Φ = 3π/2 has thickness of t = 2 mm. The outer radius…

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Q: What is the resistance of a 21-cm-long column of blood in a 0.80-cm- diameter femoral artery? The…

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Q: A stainless steel wire (σ = 1.11 x 10° Sm¯-) 3 mm in diameter is to be coated with copper (σ = 5.8 ×…

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Q: A length of aluminum wire has a resistance of 36.0 at 24.0°C. When the wire is warmed in an oven and…

A: Given:  At 24° C , Resistance = 36 ΩAt temperature T , resistance = 51.5 ΩTemperature coefficient of…

Q: A 1.70 m cylindrical rod of diameter 0.550 cm is connected to a power supply that maintains a…

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Q: At room temperature (27.0 °C) the resistance of a heating element is 100 2. What is the temperature…

A: Given that - room temperature Resistance at room temperature Resistance at increased temperature…

Q: 1.4 The resistance of a wire is given by R = R₁(1+at+ẞt²) where t is the temperature in degrees…

A: Here is the step-by-step explanationStep 1: Calculation of the resistance at 70oC using the given…

Q: As the temperature of a metal rod varies, so does the resistance and the dimensions of the rod. If a…

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Q: Earth's lower atmosphere contains negative and positive ions that are produced by radioactive…

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Q: A rod of semiconducting material of Length L=5 m and cross-sectional area A=3 mm2 lies along the…

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Q: A spool of copper wire 290 m long and with a diameter of 0.360 mm is at 20.0°C. For copper, the…

A: The wire's resistivity is, ρ=1.7×10-8 Ω The wire's length is, L=290 m The radius of wire is, r=0.360…

Q: person notices a mild shock if the current along a path through the thumb and index finger exceeds…

A: V = IR

Q: Giant electric eels can deliver a shock of 490 V with up to 1.0 A of current for a brief time. A…

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Q: At 20°C, a 7.5 m long copper wire has a cross-sectional diameter of 1 mm. If 15 A of current flow…

A: temperature, T=20 o C length of copper wire, l=7.5 m cross-sectional area, A=1 mm= 1x (10-3 m)2 = 1…

Q: Given the temperature coefficient of resistivity of a certain wire to be 3.1 x10−3 (°C)−1.By what…

A: Given temperature coefficient of resistivity , α=3.1 x10−3 (°C)−1 Let   T1 =20.0°C        T2 = 79.48…

Q: Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a…

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Q: The copper windings of a motor have a resistance of 46 Ω at 20oC when the motor is idle. After the…

A: Initial resistance of copper windings (r) = 46 ohm initial temperature of the copper windings (t) =…

Q: An aluminum wire with a diameter of 0.115 mm has a uniform electric field of 0.215 V/m imposed along…

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Q: If the 0.130 mm diameter tungsten filament in a light bulb is to have a resistance of 0.100 Ω at…

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Q: A certain laboratory experiment requires an aluminum wire of length of 22.0 m and a resistance of…

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Q: resistance of 18.0 Ω at 16.0°C. When the wire is warmed in an oven and reaches thermal equilibrium,…

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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.