. Find the ratio of the resistances of a copper wire to an aluminum wire if the length and diameter of the aluminum wire is twice the diameter of the copper. 2. A copper wire has a resistance of 15.0Ω at a temperature of 14°C. After a current passes through the windings, the resistance rose to 12°Ω. To what temperature was the wire heated?

Q: 6. An 18-gauge wire with a diameter of 1.0 mm and length 1.4m carries a constant current of 6.1 A.…

A: Given, Diameter = 1.0 mm Length = 1.4 m Current = 6.1 A Resistivity of copper wire = 1.72×10-8ohm.m…

Q: 1. What current flows through a 2.54 cm diameter rod of pure silicon that is 20.0 cm long, when 1.00…

A: Bartleby's guidelines allowing answer only the first question

Q: A platinum resistance thermometer has resistances of 210.0 2 when placed in a 0°C ice bath and 234.8…

A: Given information: The resistance of platinum thermometer when placed at 0 oC, R1=210.0 Ω  The…

Q: 3 You want to produce three 1.00-mm-diameter cylindri- cal wires, each with a resistance of 1.00 2…

A:

Q: Need help solving these problems!

A: Given:- 1a)current = o.7 A time = 1 min. Now, charge (q)= 42C

Q: Question 5 .... A current of 3.70 A is carried by a 250 m long copper wire of radius 1.25 mm. Assume…

A: current (i) = 3.70 A Length (L) = 250 m radius (r) = 1.25 mm electronic density (n) = 8.47×1028 m-3ρ…

Q: 2- A copper wire of 3mm diameter with conductivity of 6.7 * 107 (0.m)1, and electron mobility of…

A:

Q: What is the resistivity value of a wire that can conduct 5 A of current across 30 V, if the wire's…

A: Required Resistivity

Q: 1. A wire 50 m long and 1 mm in radius is connected to a battery 9.11 V with a current of 36 A.…

A:

Q: 1. Wires A and B are made for the same material and have the same length. However, the diameter of…

A: Note : We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: 3.0 A battery has an emf of 12 V and an internal resistance of 0.0500 2. What is the terminal…

A: Given : Emf (E) = 12 V Resistance (R) = 0.0500 Ω Current (I) = 8 A

Q: 1. The resistance of a wire of length 10 m is 2 ohm. If the area of cross section of the wire is 2 ×…

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

Q: A tungsten wire is used to determine the melting point of indium. The resistance of the tungsten…

A:

Q: *7 A fuse in an electric circuit is a wire that is designed to melt, and thereby open the circuit,…

A:

Q: A toaster has a Nichrome (a4.5x10-4 °C-) heating element that has a resistance of Ro80 2 at a…

A: Temperature coefficient, α=4.5×10-4°C-1 Resistance, Ro=80Ω      at temperature To=20°C Resistance,…

Q: The resistance of a wire of length 10 m is 2 ohm. If the area of cross section of the wire is 2 ×…

A: resistance of a wire of length l and cross section area A is given by R =ρ lAwhere , ρ =…

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

A: (a)  Using the expression for resistance, R=ρCuLAL=RρCuAL=0.913 Ω1.72×10-8 ΩmAA=L5.308×107 m-1

Q: Problem 1. A piece of 1 4-gauge copper wire 0. 163cm in diameter is 1 4.0m long. (a) What is its…

A: We have a copper wire of diameter d=0.163 cm (radius r=d/2=0.0815 cm) and length L=4 m with a…

Q: A 3.5m long wire with a radius of 22.0mm has a resistance of 29.1ohms at 20degreesC. If its…

A: Given data: Length of the wire is, L = 3.5 m The radius of the wire is, r =22 mm= 0.022 m Initial…

Q: 4. Determine the thermal coefficient of resistance of copper at 30°C, then use this value to…

A:

Q: An engineering intern is studying the effect of temperature on the resistance of a current carrying…

A: Given: The voltage applied at temperature t1 = 57.0o C. Current in wire I1 = 1.5 A.  second…

Q: Calculate the number of free electrons in a copper conductor having a diameter of 0.064in and a…

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

Q: 3- The resistance of a copper wire is 3.35 0 at 0 °C. What is its resistance at 50 °C? For copper, a…

A:

Q: The resistance of a copper wire increases by a factor of 1.32 when current flows through the wire…

A: The new resistance of a wire at a given temperature is given by R = Ro1+α∆T, where ∆T = T-To, Ro and…

Q: A toaster using a Nichrome heating element operates on 120 V. When it is switched on at 20°C, the…

A:

Q: A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 38.8 2 at 20.0°C. If…

A:

Q: 1.) The radius of 22-gauge Nichrome wire is 0.32 mm. (a) Calculate the resistance per unit length of…

A: We are allowed to answer only the first question. For solutions to other questions, please re-post…

Q: CURRENT AND RESISTANCE Problem 1. A piece of 1 4-gauge copper wire 0. 163cm in diameter is 1 4.0m…

A: Given  Diameter of copper wire d = 0.163 cm Length of copper wire L = 14.0 m Resistivity of wire  p…

Q: 1. The resistance of a rod with a length of 3.0 m and a diameter of 1.0 cm is 56. 0 ohms. If this…

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

Q: 7. Related to resistance is a term called resistivity. Resistivity depends on material type, and is…

A:

Q: 1. What current flows through a 0.50 mm diameter rod of annealed Copper that is 90.0 cm long, when…

A: Using Ohms lawV = I R   we find current  and using R = ρ L/A   we find resistance

Q: What diameter must a copper wire be if it is to carry a maximum current of 37 A and produce no more…

A: the values provided in the  question are as follows:- we take maximum ammont of current and heat- so…

Q: 7. A wire has a diameter of 1.0 mm and a length of 30 m, and is found to have a resistance of 1.2 1.…

A: The wire's resistivity can be determined as, Here, R, ρ, L and A represent the resistance, the…

Q: A wire with a length of 2.0 m and a diameter of 1.0 mm has a resistance of 0.45 0. What is the…

A: Length of wire (L) = 2.0 m  Diameter of wire (D) = 1.0 mm  Resistance of wire (R) = 0.450 ohm

Q: An aluminum wire (ρ = 2.82x10-8Ωm at 20 °C and α = 3.9x10-3°C-1)with a diameter of 0.085 mm has a…

A:

Q: A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 39.5 Q at 20.0°C. If…

A: It is given that Ro=39.5 Ω at To=20oCR=40.2 Ω at T=28.5oC

Q: An electric heater is made by applying a potential difference of 100 V between the ends of a…

A: solution as

Q: 1. What is the resistance at normal temperature of 60m copper wire having a diameter of 0.64mm? (Po.…

A: Given The length of the copper wire is l=60 m. The diameter of copper wire isd=0.64 mm=0.64×10-3 m.…

Q: 1) What is the current in milliamperes produced by the solar cells of a pocket calculator through…

A: Current is defined as the rate of flow of charge per unit time, through a cross section of a…

Q: What is the resistance of a 2.54-cm-diameter rod of pure silicon that is 20.0 cm long. What current…

A: Given data: Diameter of rod is, d=2.54 cm. The length of rod is, L=20.0 cm. Voltage supply is,…

Q: Between t = 1 ms and t = 12 ms, 19µC of charge pass through a wire. What is the current?

A: Given value--- time t1 = 1ms. time t2 = 12ms . charge = 19 micro C   We have to find--- current ?

Q: 1. An electric heater has a Nichrome heating element with a resistance of 8.00 N at 20°C. When 120 V…

A: Given, Resistance = 8 Ω Initial Temperature (T0) =20°C Final Temperature (T)=900°C current (U) =120…

Q: What will be the resistance of a copper wire that has a radius of 2 cm and length of 100 cm? The…

A: Note:-  You have posted 3 different questions. As per guidelines, for different multiple questions…

Q: A length of aluminum wire is connected to a precision 10.00-VV power supply, and a current of 0.4132…

A:

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.