Consider a portion of a cell membrane that has a thickness of 7.50 nm and 1.9 um x 1.9 um in area. A measurement of the potential difference across the inner and outer surfaces of the membrane gives a reading of 90.5 mV. The resistivity of the membrane material is 1.30 x 107 Omega • m.  Determine the amount of current that flows through this portion of the membrane.

Q: 15. A 2.50-m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a…

A: Solution:  Voltage across the rod, V = 18.0 V  Length of the rod, L = 2.50 m = 250 cm  Diameter, d…

Q: Charges can move across the cell membrane, so it is not a perfect insulator; the cell membrane has a…

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Q: A 2.0 mm diameter iron wire ( resistivity, p = 9.7 x 10 8 0-m) carries a current of 2.5 A. Determine…

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Q: Variations in the resistivity of blood can give valuable clues to changes in the blood’s viscosity…

A: Given: The diameter of the vein is 1.5 mm. The distance between the points is 5.0 cm. The potential…

Q: Wire C and wire D are made from different materials and have length LC = LD = 3.6 m. The resistivity…

A: Given, Wire C and wire D have length 3.6 m and diameter 1.06 mm and 0.73mm respectvily

Q: Gold is the most ductile of all metals. For example, one gram of gold can be drawn into a wire 2.38…

A: The volume of a material is calculated by using the formula V=mρ , where m=0.001 kg is the mass and…

Q: A certain metal wire has a cross-sectional area of 1.0 cm² and a resistivity of 1.7 x 10-8. m. What…

A: Given data:   Area (A) = 1.0 cm2 = 1.0×10-4 m2 Resistivity (ρ) = 1.7×10-8 Ω.m Resistance (R) = 1.0 Ω…

Q: Wire C and wire D are made from different materials and have length LC = LD = 4.3 m. The resistivity…

A: Since you have posted questions with multiple sub-parts, we will solve the first three for you. To…

Q: A silver wire with a circular cross-section has a mass of 1.45 g and a resistance of 0.790 Ω. At…

A: Mass (m) = 1.45 g = 0.00145 kg Resistance (R) = 0.79 ohm Temperature (T) = 20o C Resistivity of…

Q: What is the resistance (in units of 0) of a wire made of a material with a resistivity of 3.2 x…

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Q: A cylindrical aluminum pipe of length 1.42 m has an inner radius of 1.59 x103 m and an outer radius…

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Q: Nerve impulses are carried along axons, the elongated fibers that transmit neural signals. We can…

A: Given Diameter  = 10 μm Specific resistance ρ = 0.5 ohm. meter Length l = 7 mm To Find out…

Q: A solid cube of silver has a mass of 90 g. The density and resistivity of silver are 10.5 g/cm³ and…

A: The objective of the question is to find the resistance between opposite faces of a solid cube of…

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: Conducting Pipe: A pair of students working in a lab decide to use the plumbing to send electrical…

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Q: copper wire is r = 2.19 cm in radius and 2.6 m in length, has a resistivity of 1.72x10^-8 Ω m, and…

A: Given: The radius of the wire is 2.19 cm. The length of the wire is 2.6 m. The resistivity of the…

Q: A piece of wire has resistance of 1.25 2. The wire is made of a material with resistivity 8.2x10-7…

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Q: Variations in the resistivity of blood can give valuable clues to changes in the blood's viscosity…

A: Given: The diameter of the vein is 1.5 mm. The distance between the points is 5.0 cm. The potential…

Q: 15. A 2.50-m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a…

A:

Q: Consider a portion of a cell membrane that has a thickness of 7.50 nm and 1.2 um x 1.2 um in area. A…

A:

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: A wire is 100.0 m long and 0.800 mm in diameter. The first x meters of the wire is made of copper…

A: Given: The length of the wire is 100 m. The diameter of the wire is 0.800 mm. The potential…

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: A long wire with a radius of 0.400 cm carries a current. The potential difference across a 3.60 m…

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Q: A copper wire has radius r = 0.314 cm, is 6.00 m long, has resistivity p = 1.72-10-82 m, and carries…

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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: Two wires have the same resistance and diameter. If the wires are made of silver and copper with…

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Q: A bar (length = 80 cm) with a cross section of (1.5 mm × × 2.0 mm) has a resistance of 0.20 Ω Ω .…

A: The length of the bar is l = 80 cm. The cross sectional area of the bar is A = (1.5mm x 2.0 mm) = 3…

Q: Consider a portion of a cell membrane that has a thickness of 7.50 nm and 1.8 pm x 1.8 pm in area. A…

A:

Q: Wire Cand wire D are made from different materials and have length Lc = LD = 2.6 m. The resistivity…

A: Concepts: The resistance of a wire of length L and cross-section A is given by,         R=ρLA…

Q: Calculate the resistance of a 1.2 meter copper wire with a cross-sectional area of 1.0 x 10m?.

A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: A wire is made out of aluminum with a cross-sectional area of 5.75×10−4 m2 and a length of 40 km.…

A: The resistance of the aluminium wire is

Q: A 14-gauge copper wire of diameter 1.628 mm and resistivity of 1.72 x 108Q.m, carries a current of…

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Q: If the 0.100 mm diameter tungsten filament in a light bulb is to have a resistance of 0.162 2 at…

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Q: An electrical conductor designed to carry large currents has a circular cross section 2.40 mm in…

A: Given: The diameter of the wire is 2.40 mm or 2.40×10-3 m.           The length of the wire is 14.8…

Q: A long wire with a radius of 0.350 cm carries a current. The potential difference across a 3.00 m…

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Q: A wire has a resistance of 2.50 Ω, a radius of 4.20 mm and a length of 4.00 m and we want to find…

A: Write the expression for the resistivity

Q: A length of 120 cm from Aluminum cylinder with a cross-sectional area of 2.82 x 10 m2, the…

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Q: Gold is the most ductile of all metals. For example, one gram of gold can be drawn into a wire 2.35…

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Q: Calculate the resistivity of a material of a wire 10 m long. 0.4 mm in diameter and having a…

A:

Q: Consider a thin aluminum wire with diameter d= 6 mm The resistivity of aluminum is 2.65x10-8 Q.m.…

A: Recall R=ρL/A

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

A: Given:- A coaxial cable consists of two concentric cylindrical conductors.   The radius of the inner…

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.