A tungsten wire is used to determine the melting point of indium. The resistance of the tungsten wire is 2.221  at 20.0°C and increases to 4.307  as the indium starts to melt. αtungsten = 4.50 x 10−3 (°C)−1. What is the melting temperature of indium in °C?

Q: A rod of 2.0-m length and a square (2.0 mm x 2.0 mm) cross section is made of a material with a…

A: length of the rod(L)=2m cross-section area (A)= 4 mm2=0.000004 m2 Restitivity (ρ)=6x10-8 Ωm…

Q: An electric space heater has a Nichrome heating element with a resistance of 9 N at 20°C. When 120 V…

A:

Q: A copper wire of radius a = 0.161 mm has an aluminum jacket of outer radius b = 0.224 mm. There is a…

A: Data Given ,  Inner Radius of the wire ( a ) = 0.161 mm = 0.161 × 10-3 m Outer Radius of wire ( b )…

Q: What current (in A) must be produced by a 12.0 V battery-operated bottle warmer in order to heat…

A: Mass of glass = 70 g Mass of baby formula = 200 gMass of aluminum = 350 g Initial temperature = 20oC…

Q: Use a graph to find the resistance Ro at 0 °C and the temperature coefficient a, where the…

A: The equation of resistance is given by, R=R01+αT

Q: A 1.30 m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a…

A: diameter= 0.500 cm  potential difference = 15.0 V Room temp. T0=20 C

Q: A current-carrying gold wire has diameter 6.96 mm. The electric field in the wire is 0.58 V/m. What…

A: Remember that current density through wire is given by: J = sigma*E = I/A sigma = conductivity of…

Q: A copper (resistivity = 1.72 EXP-8 Ω.m) conductor with a square cross section, 1.0 mm on a side is…

A:

Q: A spool of iron wire 320 m long and with a diameter of 0.360 mm is at 20.0°C. For iron, the…

A: Given value--- length =320 m. diameter = 0.36 mm. resistivity = 10 × 10-8 ohm m. temperature…

Q: A spool of tungsten wire 320 m long and with a diameter of 0.480 mm is at 20.0°C. For tungsten, the…

A: part a and b are solved so with the help of this we will solve part c .

Q: The resistivity of a 1.0 m long wire is 1.72 x 10-8pm and its cross sectional area is 2.0 X 10-6m2.…

A:

Q: A block of gold of volume 232 mm is used to make a wire 78.9 m long. What is the resistance (in 0)…

A:

Q: The filament of an incandescent light bulb is made of tungsten which has a thermal coefficient of…

A: We have I =VR=VR01+α∆T

Q: A potential difference of 2.0 V is applied across a cylindrical conductor. The conductor is 20.0 m…

A:

Q: Suppose that the resistance between the walls of a biological cell is 5.1 × 109 Ω. (a) What is the…

A: Required : (a) What is the current when the potential difference between the walls is 76 mV?  (b) If…

Q: The current supplied to an air conditioner unit is 2.98 amps. The air conditioner is wired using a…

A:

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: What current (in A) must be produced by a 12.0 V battery-operated bottle warmer in order to heat…

A:

Q: An insulated extension cord is made of a 1.5 m long copper rod with a diameter of 2.3 mm. What is…

A: According to question we need to find --- What is the resistance of the extension cord? If an…

Q: A spool of iron wire 260 m long and with a diameter of 0.320 mm is at 20.0°C. For iron, the…

A:

Q: A block of aluminum of volume 340 mm is used to make a wire 13,4 m long. What is the resistance (in…

A: Given: The volume of aluminum is 340 mm3. The length of the aluminum wire is 13.4 m. The resistivity…

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

A:

Q: When a current of 0.218 A is present in a wire 20.0 m in length with cross-sectional area 8.19 x 10…

A:

Q: When a current flows in an aluminum wire of diameter 2.83 mm, the drift speed of the conduction…

A:

Q: A nichrome wire and an aluminum wire, each with the same initial resistance, have the same change in…

A: Given ???=2⋅82×10−8?−? ???=3⋅9×10−3??−1 ???=2⋅5×10−6⋅?−? ???=0.4×10−3??−1

Q: An iron wire is used to determine the melting point of material X. The resistance of the iron wire…

A:

Q: What is the resistance of (a) A 1.8-mm-long gold wire that is 0.10 mm in diameter? Express your…

A:

Q: wire

A: Given: The potential difference across the wire = 4 Volts Length of the wire = 5 m Cross-sectional…

Q: A spool of copper wire 200 m long and with a diameter of 0.320 mm is at 20.0°C. For copper, the…

A:

Q: A metal has a resistivity of 1.26 x 10-8 0 m. What will the resistance of the following wires made…

A:

Q: 2. A metallic cable 50.0 m long and 10.0 cm in diameter carries a current of 10.0 A. The resistivity…

A:

Q: A spool of copper wire 200 m long and with a diameter of 0.320 mm is at 20.0°C. For copper, the…

A: Calculate the resistance of the wire.

Q: copper transmission cable 120 km long and 10.5 cm in diameter carries a current of 125 A.…

A:

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

A: Given data The initial resistance of the tungsten wire is Ri = 2.788. The temperature of the…

Q: A copper wire that is 2.70 mm in radius with density 8.94 g/cm3 has a current of 6.10 A. The molar…

A:

Q: 4) The current supplied by a battery as a function of time is I(t) = (64.27 fA) e-t/(3.78 months).…

A: Current supplied as a function of time is given by; i(t)=64.27e-t3.78 fA Time T=1.413 years=16.96…

Q: A spool of tungsten wire 200 m long and with a diameter of 0.360 mm is at 20.0°C. For tungsten, the…

A:

Q: A spool of copper wire 320 m long and with a diameter of 0.360 mm is at 20.0°C. For copper, the…

A:

Q: (a) Of what material is a wire made, if it is 30.0 m long with a 0.130 mm diameter and has a…

A:

Q: Q1 / A piece of metal is its length 5m and its cross-sectional area 0.5 mm^2 and the specific…

A:

Q: A spool of tungsten wire 320 m long and with a diameter of 0.480 mm is at 20.0°C. For tungsten, the…

A:

Q: rrent I =0.35 A flows through a cylindrical resistor made out of some unknown ceramic-like…

A: Given values:- Current,(I)=0.35 A ----(1) Radius of body,(R)=4.25 mm=4.25 x 10-3 m----(2) Length of…

Q: 00-gauge copper wire has a diameter of 9.266 mm and a resistivity of 1.72 × 10-8 Ω⋅m. Calculate…

A: Given data:  Diameter (D) = 9.266 mm Resistivity (ρ) = 1.72 × 10-8 Ω.m Length (L) = 1 km Current (I)…

Q: QI: The length of copper wire with diameter (1mm), have a resistance of (1KN) and conductivity…

A:

Q: A spool of copper wire 290 m long and with a diameter of 0.440 mm is at 20.0°C. For copper, the…

A:

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

A: Given: L=290md =0.360mm = 0.360*10-3 mT1 = 20°Cρo=2.82*10-8 Ωmα=3.90*10-3 °C-1I=0.600A

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

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.