An electric flat iron draws a current of 15 A when connected to a 220 V line. (a) What is the resistance of the heating element of the flat iron assuming that it obeys Ohm’s law? What is the resistivity of the heating element if it is a wire that is 2.7 cm long with a cross-sectional area of 2.1 x 10-4 m2?

Q: If the 0.185 mm diameter tungsten filament in a light bulb is to have a resistance of 0.103 Ω at…

A: Given data:   Diameter (d) = 0.185 mm = 0.185×10-3 m Resistance (R) = 0.103 Ω Resistivity (ρ) =…

Q: 5.0 cm length of a cylindrical copper wire has a radius of 0.01 mm. The resistivity of copper is…

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

A: Given data:  Resistivity (ρ) = 12.08×10-8 Ω.m Length (L) = 14.22 mm = 14.22×10-3 m Diameter (d) =…

Q: The resistance of a 100-cm wire of cross sectional area 2 x 10^-6 m^2 is 400 n. What is the…

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Q: What current flows through a 2.90 cm diameter rod of pure silicon that is 15.5 cm long, when 1000 V…

A: Solution:   Given Values,   The radius of the rod (r)=d2=2.90 cm2=0.0145 m Length of the wire…

Q: A wire is 1.1 m long and 1.2 mm2 in cross-sectional area. It carries a current of 4.8 A when a 2.4 V…

A: The length of the wire L = 1.1 m  The cross-sectional area of the wire = 1.2 mm2 The carries a…

Q: 1 0.500-meter length of wire with a cross-sectional area of 3.14 x 106 meters squared is found to…

A: Given value--- length = 0.5 m. Area = 3.14 × 10-6 m2 . Resistance = 2.53 × 10-3 ohm. We have to…

Q: Consider a cylindrical ohmic wire with the following dimensions: length = 10.0 m, radius = 0.05 m.…

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Q: A 60 W lightbulb typically has a current of 0.50 A flowing through it. Calculate (a) the number of…

A: Given, current, I = 0.50 A Power, W = 60 W

Q: A wooden skewer and a piece of wire have the same dimensions: a length of 0.20 m and a…

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Q: There is a potential difference of 0.90 V between the ends of a 20 cm long graphite rod that has a…

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Q: There is a potential difference of 1.6 V between the ends of a 10 cm long graphite rod that has a…

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Q: Consider a portable electric blanket that runs on a 6 V battery. If you use copper wire with a 0.75…

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Q: A thermometer made of Platinum has a resistance of 50 2 at 20 C, what is the measured temperature…

A: Resistance of platinum at 20oC = 50 ohm New resistance (R') = 86.8 ohm temperature of coefficient of…

Q: A conductor having a resistance of 50 ohms has temperature coefficient of resistivity of 4.143x10^-3…

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Q: There is a potential difference of 1.3 V between the ends of a 10 cm long graphite rod that has a…

A: Given  Potential difference between the ends is ∆V=1.3 V Length of the rod is l=10 cm=0.10m…

Q: how long should the wire

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Q: A small bulb is rated at 5.9 W when operated at 125 V. The tungsten filament has a temperature…

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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…

Q: lông L tungster re if it has a diam 0.137 × 10-3 m and a resistance of 3.41 k2? The resistivity of…

A: GivenDiameter of wire (d)=0.137×10-3 mResistance(R)=3.41×103 ohm  Resistivity of Tungsten…

Q: The temperature coefficient of resistivity for the metal gold is 0.0034 (C°)-1, and for tungsten it…

A: Given  αgold=0.0034 (C0)-1 αtungsten=0.0045 (C0)-1∆RRgold=7.9%

Q: A conductor having a resistance of 50 ohms has temperature coefficient of resistivity of 4.143x10^-3…

A: According to question we need to find --- What is its resistance when the temperature drops to 20…

Q: A conducting wire of radius 1 mm is carrying a uniformly distributed current of 50 A. If the…

A: Given: Current, I = 50 Aelectron density, n = 8.1*1028 electrons/m3Radius of wire, r = 1 mm…

Q: If the resistivity of a particular wire is 75.56x10-8 Ω⋅m, the wire is 48.16mm in length, and the…

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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…

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Q: A wire 1.3m long and a cross-sectional area of 0.390mm^2 has a resistance of 33.9ohms at 20degreesC.…

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Q: A common flashlight bulb is rated at 0.25 A and 2.6 V (the values of the current and voltage under…

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Q: The resistance of a copper wire at 20 degrees is 40Ω. The length of an aluminum wire is 6 times the…

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Q: ISuppose that you wish to fabricate a uniform wire out of 4.56 g of copper. If the wire is to have a…

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Q: a) What is meant by the "resistance of a conductor"? Write the relation between resistance,…

A: Part(a): The resistance of conductor is defined as it is opposition offered by the the material in…

Q: Consider a carbon rod resistor that has a uniform cross-sectional area of 5.00 mm-. When a potential…

A: The resistance of a material is equal to the resistivity and length of the conductor and inversely…

Q: (a) The cylinders A-D shown below are all made from copper. Rank them in order of increasing…

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Q: A copper wire carries a current of 82.2 mA. (a) Find the number of electrons that flow past a given…

A: Recall Ne=Q Where N is number of electrons. And Q=it

Q: The emf of a battery is E = 18 V. When the battery delivers a current of 0.3 A to a load, the…

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Q: An electric device delivers a current of 5 A for 10 seconds. How many electrons (1.6x10-19 C) flow…

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Q: Aluminium is used to make long-distance power lines because it has a low resistivity and is…

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Q: When a voltage difference is applied to a piece of silver wire, a 20.0 mA current flows. If the…

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Q: the 0.145 mm diameter tungsten filament in a light bulb is to have a resistance of 0.185 Ω at…

A:

Q: An aluminum rod with a square cross-section is 2.6 m long and 5.3 mm on edge. (a) What is the…

A: Given data: Length of aluminum rod is, La=2.6 m. Edge length of aluminum rod is, a=5.3 mm=5.3×10-3…

Q: If the 0.180 mm diameter tungsten filament in a light bulb is to have a resistance of 0.176 Ω at…

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Q: A resistance thermometer using a platinum wire is used to measure the temperature of a liquid. The…

A: Given data: The resistance is R1=2.42 Ω. The resistance is R2=2.98 Ω The thermal coefficient is…

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.