Cell membranes contain channels that allow Nat ions to rush in. Consider a channel that has a diameter of 1.26 nm and a length of 11.5 nm. If the channel has a resistance of 18.5 G2, what is the resistivity p of the solution in the channel? Sem

Cell membranes contain channels that allow Nat ions to rush in. Consider a channel that has a diameter of 1.26 nm and a length of 11.5 nm. If the channel has a resistance of 18.5 G2, what is the resistivity p of the solution in the channel? Sem

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 89CP: Consider a resistor made from a hollow cylinder of carbon as shown below. The inner radius of the...

See similar textbooks

Related questions

Q: A common flashlight bulb is rated at 0.28 A and 2.7 V (the values of the current and voltage under…

A: We know, T=T0+1αRR0-1 where, T0 is the room temperature α is the coefficient of resistivity R is…

Q: A heating element is made by maintaining a potential difference of 75.0 V across the length of a…

A: Data provided: Potential difference (V) = 75.0 V Resistivity of nichrome (ρ) = 5.00×10-7 Ωm Area…

Q: Q1.Nichrome wire has resistivity p=1.5*10-6 (Q.m) calculate the following a. The resistance per unit…

A: Resistivity of Nichrome wire is p = 1.5 x 10-6 ohm-m Radius of the wire is r = 0.321 mm Potential…

Q: When all the ion channels in a cell membrane are closed, the resistivity is very high. However if…

Q: A resistor rated at 250 k Ω is connected across two D cell batteries (each 1.50 V) in series, with a…

Q: Two copper wires A and B have the same length and are connected across the same battery. If Rg =…

Q: A 1.50 m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a…

A: Given Voltage across the rod, V = 15.0 V Length of rod, L = 1.5 m = 150 cm, Diameter, d = 0.50 cm,…

Q: A copper wire has a diameter of 2.0 mm and a length of 3.0 m. It carries a current of 6.3 A. The…

A: The given values are,

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

Q: Problem 7: An extension cord has a resistivity of p = 7.5 × 10-8 2-m. The cord is made from copper…

Q: A heating element is made by maintaining a potential difference of 75.0 V across the length of a…

Q: A straight, cylindrical wire lying along the x axis has a length of 0.411 m and a diameter of 0.7…

A: Given Length of the wire , L= 0.411 m Diameter of the wire , d= 0.7 mm Resistivity of the…

Q: A potential difference of 1.5 V is applied across a tungsten wire of length 2.4 m and cross-…

A: According to company policy, only first question will be answered here. Please post the rest…

Q: A copper wire with AWG18 (generally used in wires connecting lamps) has a nominal diameter of 1.02…

A: Current density s given as J=IA…

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: 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: wire has a diamter of D=0.65 cm and is L=6.5 m long. When connected to a V=14 V source the wire…

Q: Suppose that the resistance between the walls of a biological cell is 5.9 × 109 Ω. (a) What is the…

A: Given that:- Resistance between the walls of a biological cell=5.9×10^9 ohm

Q: A copper wire is (50 m) long, and has a cross-sectional area of (5 mm²). a/ Calculate the resistance…

A: Given: The length of the wire is 50 m. The cross-sectional area of the wire is 5 mm2.

Q: A potential difference of 3.00 µV is set up across a 2.00 cm length of a wire (with resistivity of…

Q: Nichrome alloy has a resistivity of 110 x 10-6 Ncm. From a roll of nichrome wire of 2.5 mm diameter,…

A: Given values: Resistivity, ρ=110×10-6 Ωcm Radius, r=2.5 mm2=1.25 mm Length, l=1 m

Q: 2. The current density in a copper wire of diameter 1.5 mm ig 1.5x 10° A/m2. The number of free…

Q: A gold wire carries 22 A of current with a drift velocity of 4.3 × 10-3 m/s. Assume there is one…

A: Since you have asked multiple questions, we will answer you the first question. Kindly repost the…

Q: Pacemakers designed for long-term use commonly employ a lithium-iodide battery capable of supplying…

A: Charge capacity of battery, Q = 0.42 A. h Average current produced by pacemaker, I = 5.6 micro amps…

Q: 1. Gold wire (resistivity p=2.44 x 10* 2m) with a diameter of 2.0 mm is being unwound and a certain…

A: The resistance of a wire is given by, R=ρLA................(1) Where, R= resistance of the wire…

Q: A straight, cylindrical wire lying along the x axis has a length of 0.72 m and a diameter of 0.78…

A: Given The resistivity of the wire is Ꝭ = 4.74×10-8 Ω.m. The length of the wire is l = 072 m. The…

Q: A rear window defroster consists of a long, flat wire bonded to the inside surface of the window.…

A: Given: Total length of wire is 12.2 m. Width of the wire is 1.8 mm. The thickness is 0.11 mm.…

Q: A metallic conductor has a resistivity of 2 x10-6 Qm. What is the resistance of a piece that is 40 m…

Q: A heating element is made by maintaining a potential difference of 89.0 V across the length of a…

A: Given that; Potential difference, V=89 V Cross section, A=4.96×10-6m2 Resistivity, ρ=5×10-7Ωm a) We…

Q: You apply a potential difference of 3.4 V between the ends of a wire that is 3 m in length and 0.5…

A: Ohm's law relates the Voltage across the circuit and the current flowing through the circuit. The…

Q: A common flashlight bulb is rated at 0.30 A and 2.7 V (the values of the current and voltage under…

A: The resistance when the bulb is ON: R = VI = 2.70.3 =9Ω The temperature dependence on the resistance…

Q: An aluminum wire (p = 2.82x108 Qm at 20 °C and a = 3.9x10³ °C') with a diameter of 0.085 mm has a…

Q: What is the resistance ?R of a 43.9-43.9-m-long aluminum wire that has a diameter of 9.59 mm?9.59…

A: Resistance of aluminum wire= ?

Q: A strip of doped silicon 260.0 um wide contains 8.80 × 1022 conduction electrons per cubic meter and…

Q: The table reports resistivities of various materials at 20.0°C. We can identify the metal that the…

A: Given data: Resistance (R) = 0.25 Ω Diameter (d) = 2 mm = 2×10-3 m Length (L) = 50 m Required:…

Q: A hormal conductor has the following characteristics: Resistivity at 20°C po = 7.21 × 10-8Nm 0.0034…

A: Soltuion: Givent that resistvity at 20 degree C, ρ = 7.21x10-8 ohm mtemeperature coeeficient α =…

Q: Consider a resistor made from a hollow cylinder of carbon as shown below. The inner radius of the…

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…

Q: Wire C and wire D are made from different materials and have length LC = LD = 3.1 m. The resistivity…

A: The electric potential difference between point 1 and 2 is the potential drop in wire C.Write the…

Q: A straight eylindrical wire lying along the x axis has a length of L = 2.4 m and a radius of r =…

Q: Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a…

A: r1 = 2.16 mm r2 = 0.508 mm l = 0.801 km = 801 m ρ = 182 Ω.m V = 192 MV = 192 x 106 V I = ?

Q: Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a…

A: Given:

Q: A heating element is made by maintaining a potential difference of 71.0 V across the length of a…

A: Given Potential difference V = 71 V Cross sectional area = 3.56×10-6 m2 resistivity ρ =…

Q: A heating element is made by maintaining a potential difference of 75.0 V across the length of a…

Concept explainers

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.

Question

> Chapter 18 Homework
O Resources
Cell membranes contain channels that allow Nat ions to rush in. Consider a channel that has a diameter of 1.26 nm and a
length of 11.5 nm.
If the channel has a resistance of 18.5 G2, what is the resistivity p of the solution in the channel?
about us
privacy policy terms of use
contact us help
caers
87°F Rain coming
近

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Consider a power plant is located 60 km away from a residential area uses Q-gauge (A=42.40mm2) wire ofcopper to transmit power at a current of I = 100.00 A.How much more power is dissipated in the copper wires than it would be in superconducting wires?
Check Your Understanding The current density is proportional to the current and inversely proportional to the area. If the current density in a conducting wire increases, what would happen to the drift velocity of the charges in the wire?
In Figure 21.41. does the graph indicate the time constant is shorter for discharging than for charging? Would you expect ionized gas to have low resistance? How would you adjust R to get a longer time between flashes? Would adjusting R affect the discharge time?
Consider a resistor made from a hollow cylinder of carbon as shown below. The inner radius of the cylinder is Ri= 0.20 mm and the outer radius is R0 = 0.30 mm. The length of the resistor is L = 0.90 mm. The resistivity of the carbon is =3.5105 m. (a) Prove that theresistance perpendicular from the axis is R=2L1n(R0Ri) . (b) What is the resistance?
What current flows through a 2.54-cm-diameter rod of Pure silicon that is 20.0 cm long, when 1.00103 V is applied to it? (Such a rod may be used to make nuclear- particle detectors, for example.)
The diameter of wire A is greater than the diameter of wire B, but their lengths and resistivities are identical. For a given voltage difference across the ends, what is the relationship between PA and PB, the dissipated power for wires A and B, respectively? (a) PA = PB (b) PA PB (c) PA PB
Resistors are commonly rated at 18W,14W,12W ,1 W and 2 W for use in electrical circuits. If a current of1 = 2.00 A is accidentally passed through a R=1.00 resistor rated at 1 W, what would be the most probable outcome? Is there anything that can be done to prevent such an accident?
A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any wires used for connections is negligible, (a) What is the current through the resistor? (b) What is the power dissipated by the resistor? (c) What is the power input from the battery; assuming all the electrical power is dissipated by the resistor? (d) What happens to the energy dissipated by the resistor?
A 0.50-W, 220- resistor carries the maximumcurrent possible without damaging the resistor. If the current were reduced to half the value, what would be the power consumed?
The potential difference across the filament of a light-bulb is maintained at a constant value while equilibrium temperature is being reached. The steady-state current in the bulb is only one-tenth of the current drawn by the bulb when it is first turned on. If the temperature coefficient of resistivity for the bulb at 20.0C is 0.004 50 (C)-1 and the resistance increases linearly with increasing temperature, what is the final operating temperature of the filament?
Use the atomic theory of matter to explain why the resistance of a material should increase as its temperature increases.
Residential building codes typically require the use of 12-gauge copper wire (diameter 0.205 cm) for wiring receptacles. Such circuits carry currents as large as 20.0 A. If a wire of smaller diameter (with a higher gauge number) carried that much current, the wire could rise to a high temperature and cause a fire. (a) Calculate the rate at which internal energy is produced in 1.00 m of 12-gauge copper wire carrying 20.0 A. (b) Repeat the calculation for a 12-gauge aluminum wire. (c) Explain whether a 12-gauge aluminum wire would be as safe as a copper wire.