a copper wire has diameter 0.5mm and resistivity of 1.6×10^-8 what will be the length of the wire to make the resistance 10 ohm? how much does the resistance change if the diameter is doubled?

Q: A battery with an internal resistance of 1.5 ohms  is connected in series with resistors R1 = 3 ohms…

A: Given data:  Internal resistance (r) = 1.5 Ω The battery is connected in series with two resistors…

Q: A wire has a length of 8.0 m and is made of copper which has a resistivity of 1.7 x 10-8 Ωm.  This…

A: The diameter d=0.01m  Length L=8.0m  To find the resistance of the wire

Q: A copper wire of length L has a resistance R. The wire is passed through a small metal ring,…

A: Given data: The length of wire is L. The resistance is R.

Q: A copper wire 100m long with cross-sectional area of 2x10-4 cm2 is heated from room temperature of…

A: 1. The expression for find initial resistance of wire is R=ρlA Substitute values in the above…

Q: A car headlight filament is made of tungsten and has a resistance of 0.350 ohms. If the filament is…

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Q: current of 2.22 is generated from a battery whose internal resistance is 0.06. You measure the…

A: Given : Current , I = 2.22 A  Internal resistance , r = 0.06 ohm  Voltage , V = 0.98 V  To Find :…

Q: The resistivities of copper and aluminum are 1.7 x 10-802m and 2.6 x 10-802m respectively. What…

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Q: If 0.050 A of current flows across the 300 ohms resistor, what is the voltage drop in 100-ohms…

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Q: You have a circuit and you measure the current and find it is 9.51 micro A. You measure the…

A: Current, I = 9.51 μA = 9.51 x 10-6 A Voltage, V = 5.42 mV = 5.42 x 10-3 V Determine resistance R.

Q: When a tungsten wire of thickness 20.4 mm, length of 3 m and electrical resistivity is 5.8 x 10-8…

A: Given a tungsten wire of thickness 20.4 mm, length of 3 m and electrical resistivity is ρ=5.8×10-8…

Q: A nerve fiber may be approximated as a cylinder with a diameter of 1 x 10^-5 m and length of…

A: Given data: Diameter of nerve fibre is, d=1×10-5 m. Length of nerve fibre is, L=2.0×10-1 m=0.2 m.…

Q: What is the ratio of the resistance in a 16-W LED bulb compared to a 100-W incandescent bulb…

A: The voltage drops across LED and incandescent bulb is same. The power across the 16 W LED bulb is

Q: A car headlight filament is made of tungsten and has a cold resistance of 0.350 Ω. If the filament…

A: Given L = 4.00 x 10-2m R = 0.350 ohm Resistivity of tungsten ( ρ ) = 5.6 x 10-8ohm.meter

Q: A circuit contains four resistors. Resistor R1 has a resistance of 53.0 2, resistor R2 has a…

A: Given data: Resistance  R1=53.0ΩR2=115ΩR3=77.0ΩR4=151Ω Voltage V=45.0V

Q: 200 Ω resistor and a 500 Ω resistor are in series as a part of a larger circuit. If the voltage…

A: 200 Ω resistor and a 500 Ω resistor are in series as a part of a larger circuit. If the voltage…

Q: A wire of diameter 0.800 mm and length 25.0 m has a measured resistance of 1.60 2. What is the…

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Q: A coaxial cable consists of two concentric cylindrical conductors. The region between the conductors…

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Q: In order to triple its resistance, by how much would you have to increase the temperature of a piece…

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Q: What is the output voltage (in V) of a 3.0000 V lithium cell in a digital wristwatch that draws…

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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: Please determine what is asked 1. The resistance of a wire is R ohms. It is stretched to ten times…

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Q: An electrician plans to cut a copper wire with more than 10Ω resistance (p=1.724*10-8m). The radius…

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Q: A block of carbon, 1.0 cm by 2.0 cm by 5.0 cm, has a resistance of 0.015 Ω between its two smaller…

A: The resistivity of carbon is 0.0051 ohm-m.

Q: An iron wire has a diameter 3.65 mm and resistivity 9.71x 10-8 Qm. What will be the length of this…

A: Formula of resistance is as follows: R=ρLA…

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

A: Let us consider two wires A & B having resistivities (ρA) &  (ρB) in ohm-meter and lengths…

Q: The heating element of a toaster is a 5.4 m length of nichrome wire of diameter 0.48 mm. The…

A: The resistance of the heating element is given by, R=ρlA Here, ρ is the resistivity of the material,…

Q: A copper wire has a resistance of 0.400 Ω at 20.0°C, and an iron wire has a resistance of 0.426 Ω at…

A: To determine: The temperature at which the resistance of the copper and iron will be equal   Given:…

Q: A copper wire has a diameter 4.75 mm and resistivity 1.6 x 10-8 Ωm. What will be the length of this…

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Q: hat is the electrical resistance of a copper wire that has a radius of 0.80 mm and a length of 2.0…

A: Given: The radius of the wire is 0.8 mm. The length of the wire is 2 m. The resistivity of the wire…

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 50 v battery with an internal resistance of 5 ohms has a terminal voltage of 45 v when  attached…

A: Given: The emf of the battery is 50 V. The internal resistance of the battery is 5 ohm. The terminal…

Q: A wire (length = 2.0 m, diameter = 1.0 mm) has a resistance of 0.9 N. What is the resistivity of the…

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Q: Choose the letter of correct answer. Resistance 1 Ω, 2 Ω, and 3 Ω are connected in the form of…

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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…

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Q: A wire having an area of cross section = 10 m? and another wire having an area of cross section = 15…

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Q: A certain medical device has a resistance of 2 kilo-Ohm and is rated for 20 Watts. What is the…

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Q: An iron wire has a diameter 0.85 mm and resistivity 9.71x 10-8 Qm. What will be the length of this…

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Q: If a cell’s diameter is reduced by 50% without changing the membrane thickness, how do the…

A: When diameter is decreased,the area decreases. Given that the thickness is constant. The resistance…

Q: If a cell’s membrane thickness doubles but the cell stays the same size, how do the resistance and…

A: Resistance is given by R=ρlA where ρ=Resistivityl=Length of resitorA=Area of resistor Here the…

Q: current of 2.16 is generated from a battery whose internal resistance is 0.85. You measure the…

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Q: Three Christmas lights are connected in series (one single path) and they have each the same…

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Q: A resistor with the color coded value of 1000 Ω and ± 10% tolerance can have an actual resistance…

A: Required : A resistor with the color coded value of 1000 Ω and ± 10% tolerance can have an actual…

Q: Gold is the most ductile of all metals. For example, 2 gram of gold can be drawn into a wire 2.4 km…

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Q: Refer to Figure C If 0.050 A of current   flows across the 300 ohms resistor, what is the voltage…

A: Given : 0.050 A of current flowing through 300 ohm resistor.  Find : Voltage drop in 100 ohm…

Q: 4.5 V battery is connected to a bulb whose resistance is 1.3 Ω. what is the current through the…

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Q: A carbon resistor has a resistance of 18 Ohm at a temperature of 20degree C. What is its resistance…

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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.