A new material is found to be superconducting below 77 K. How much resistance will a 75 mm long sample of this material have if it is at a temperature of 69.3 K while connected to a 6.4 V AC-power supply? R =       How much thermal energy will it generate? Thermal energy generated =

Q: a) The time rate at which charge flows through the area is defined as the electric current. b) The…

A: a) True , because current is the time rate of flow of charge in unit area. b) False , because the…

Q: A toaster has a Nichrome (a=4.5×104 °C-) heating element that has a resistance of Ro= 80 2 at a…

A: The relation between the resistance and the temperature is given by, Here, R, Ro, T, To and α…

Q: A temperature-stable resistor is made by connecting a resistor made of silicon in series with one…

A:

Q: A light bulb is rated at 110 W, 220 V. What steady current flows through it for these values? O 0.5…

A:

Q: At what temperature will silver have a resistivity that is two times the resistivity of iron at room…

A: The resistivity of silver  is calculated as,         Rt = R0[1+α(T-T0)] Here,  Rt is the resistivity…

Q: Determine the experimentally resistance (R) from the slope, and calculate δ%.

A: Given data The first observation for voltage is, V1=24.00 V The second observation for voltage is,…

Q: 5 Q:- A current of (2 µA) passing through an intrinsic silicon bar has (3 mm) length and (50 × 100…

A: The current is given as, I=2 μA (or) I=2×10-6 A The length of the bar is given as, L=3 mm (or)…

Q: Nichrome alloy has a resistivity of 110 × 10−6 Ωcm. From a roll of nichrome wire of 2.5 mmdiameter,…

A: Given, Resistivity ρ=110×10-6 ohm cm diameter=2.5 mm radius r=1.25 mm L=1 Area of the roll of…

Q: 1. What length of copper (p=1.78 x 10-80m) wire 1.2 mm in diameter is needed to make a 20-Q resistor…

A: Given that,Resistivity of copper : ρ = 1.78×10-8  (Ohm.m)Diameter : D = 1.2 (mm)Radius : r = D2 =…

Q: A metal object having a length (10m), cross section area (0.5 mm?), and resistance (0.52) is…

A:

Q: A temperature-stable resistor is made by connecting a resistor made of silicon in series with one…

A:

Q: The magnitude J of the current density in a certain wire with a circular cross section of radius…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 1. A temperature-stable resistor is made by connecting a resistor made of silicon in series with one…

A:

Q: A conductive wire has a resistivity of (0.649x10-8(Q.m)) at room temperature are (5.8x10-)…

A: Given data: Conductivity of the conducting wire σ=0.649×108 Ω·m-1. Carrier concentration of…

Q: 4.00 9.0 V 5.0 Ωξ 3. What is the current passing through the 5.0 ohm resistor? (1) 1.0 A (3) 2.3 A…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Nichrome alloy has a resistivity of 110 x 10-6 Ncm. From a roll of nichrome wire of 2.5 mm diameter,…

A: Given values: Resistivity, ρ=110×10-6 Ωcm Radius, r=2.5 mm2=1.25 mm Length, l=1 m

Q: 5) A thin copper wire with a diameter 2.5 mm is connected to a 1.2-V potential difference, a current…

A: Diameter,  Potential difference,  Current,  Resistivity,

Q: The resistivity of certain metals becomes zero at :Select one а. О b. Very low temperatures .c Very…

A: From question: A metal's resistivity is a function of temperature; it rises as the temperature…

Q: At what temperature will aluminum have a resistivity that is three times the resistivity copper has…

A: Given data The copper is placed at room temperature ∆t = 20°C. The mathematical formulation for the…

Q: A 220. V potential difference is applied to a space heater that dissipates 440. W during operation.…

A:

Q: Copper has a density of 8.96 x 10³ kg/m³ and a resistivity of 1.70 x 10-³0-m. a) On the basis of the…

A: The density of Copper is                          The resistivity is

Q: Q1: A conductive wire has a resistivity of (0.649×10-8(Q.m)') at room temperature are (5.8x10» )…

A: Given- Conductivity σ=0.649×10-8(Ω.m)-1So,Resistivity ρ=1σ=10.649×10-8=1.54×108Ω.m Conduction…

Q: In this figure R=31 2. The current in the 10-V emf is R 10 V L 5.0 2 5.0 £2 15 V A. Use the absolute…

A:

Q: A temperature-stable resistor is made by connecting a resistor made of silicon in series with one…

A:

Q: At what temperature will silver have a resistivity that is four times the resistivity of iron at…

A: resistivity of iron at room temperature = ρt =  9.71 x 10-8 ohm- m resistivity of silver at zero…

Q: 4) A copper wire has a diameter of 1.60mm and carrier a current of 2.5A. Given the density of free…

A: diameter, d = 1.60 mm current, I = 2.5 A number of electrons density, n = 8.5 x 1028  Resistivity, ρ…

Q: circuit is constructed with a 6.00 V battery connected across a 2500.0 2 resistor. etermine the…

A: Voltage of the circuit , V = 6 V Resistance of circuit ,R = 2500 ohm We know from Ohm's Law V = I R…

Q: A thermometer made of Platinum has a resistance of 50 N at 20 C, what is the measured temperature…

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Q: Silver at room temperature is found to have a resistivity of 1.59×108 №∙m. If the temperature i…

A: The resistivity which determines the resistance of a material to the flow of electric current will…

Q: A current of 0.228 A flows through a(n) 8.22 2 resister. Calculate the voltage drop across the…

A: Given : Current = 0.228 A Resistance = 8.22 Ω

Q: 8. A heating element using nichrome connected to a 230 V supply draws an initial current of 3.2 A…

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Q: Four AA batteries of -1.5 V in series are used to give power to a transistor radio. If the batteries…

A:

Q: Q8. If electricity costs 10 Bz per kilowatt-hour, how much does it cost to operate a 220 V air…

A:

Q: The resistivity of pure germanium = 600 x 10-3 m. Calculate the resistance of a cylinder of pure…

A:

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.