Problem 1:  The voltage across a membrane forming a cell wall is 83 mV and the membrane is 7.75 nm thick. What is the electric field strength in the cell wall, in volts per meter?

Q: The potential difference across a cell membrane  is 65 mV. If the thickness of the membrane is 9.0…

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Q: A Geiger-Mueller tube is a radiation detector that consists of a closed, hollow, metal cylinder (the…

A: Solution:-Given data in the question

Q: Problem 2:  A parallel plate capacitor has a charge on one plate of q = 1.4E-06 C. Each square plate…

A: Given value--- charge = q = 1.4E-06 C . width d1 = 2.6 cm. separation between plates d2 = 0.55 mm…

Q: Dry air is a pretty decent insulator; it has a very high resistivity of 3 × 1013 N. m. Consider a…

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Q: The voltage across a membrane forming a cell wall is 80.0 mV and the membrane is 10.00 nm thick.…

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Q: Problem 1. Consider the "Lightning Plasma Ball" pictured below. The diameter of the central sphere…

A: Plasma is a good conductor of electricity. Therefore, the central sphere and outer sphere can be…

Q: A student determines that the voltage at point P inside an arbitrarily shaped metal object is 15 V.…

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Q: A cell membrane is 7.0 nm thick, with a 70 mV potential difference across the membrane. What is the…

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Q: A parallel plate capacitor with circular faces of diameter 7.2 cm separated with an air gap of 3.3…

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Q: A parallel plate capacitor with circular faces of diameter 7.2 cm separated with an air gap of 1.6…

A: From the question, we can identify the following values:Diameter of the circular faces of the…

Q: Problem 6: Consider a spherical metal shell of radius R in empty space. Part (a) Enter an expression…

A: The capacitance of spherical shelke is directly proportional to Radius of shell.  So,

Q: What is the voltage (in mV) across a 9.60 nm thick membrane if the electric field strength across it…

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Q: An air-gap parallel-plate capacitor has a plate area of 2 cm2 and a separation of 3 mm is charged to…

A: Given, Area, A= 2×10-4m2 Separation, d = 3×10-3m ε=8.854×10-12 V= 2V The capacitor for plate, C=εAd…

Q: Between the inner part of the cell and the outer solution there is a potential difference (membrane…

A: Given data:  Potential difference (ΔU) = 90 mV Thickness (d) = 18 nm Required: The electric field…

Q: Determine the charge stored by Cl when CI = 20 µF, C2 = 10 µF, C3 = 30 µF, and VO = 12 V. elect one:…

A: The capacity of a condenser is given as:Q=CVwhere C is the capacitance and V is the voltage The…

Q: The electric field inside a 40-cm -long copper wire is 0.019 V/m . What is the potential difference…

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Q: des otential in a region of space. 1. Dry air can support a maximum electric field strength of about…

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Q: determine how close, w, the electron will get to the bottom plate.

A: Given data:     The charge on electro  is: q = 1.6×10-19 C The mass of the electron is: m= 9×10-31…

Q: A spherical conductor has a radius of 8 mm and a charge of 20uC. Calculate the electric potential at…

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Q: A parallel plate capacitor has a charge on one plate of q = 1.6E-06 C. Each square plate is d1 = 1.8…

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Q: capacitance?

A: Here, we are given 5 number of sheets having different thickness. In one column there is measured…

Q: The electric field strength between the plates of a simple air capacitor is equal to the voltage…

A: Voltage across capacitor is electric field is Note:              capacitor is an electrical…

Q: rength in the cell wall, in volts per meter? sin() cos() tan() П () 7 89 HOME

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Q: In the Millikan oil drop experiment, the charge of an electron is measured by placing an ionized oil…

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Q: A capacitor is formed from two 2.0 cm × 2.0 cm electrodes spaced 1.0 mm apart. The electrodes are…

A: Given:dimensions of the electrodes, 2.0 cm×2.0 cmor in SI units,   0.02 m×0.02 mseparation between…

Q: A spherically spreading EM wave comes from a 1700 W source. Part A At a distance of 4.7 m, what is…

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Q: In the cylindrical electrode system given in the figure, the relative dielectric constant (E,=r) of…

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Q: The voltage across a membrane forming a cell wall is 77.7 mV and the membrane is 9.12 nm thick. What…

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Q: A coaxial cable has inner conductor radius a=7.6cm and outer conductor radius b=24.6cm. The medium…

A: From given figure,a=7.6 cmb=24.6 cmand, For free space ε=8.854×10-12 F/mWe know that, Capacitance of…

Q: A red blood cell contains 3.9 x 107 free electrons. What is the total charge of these electrons in…

A: Given data:  Number of free electrons (n) = 3.9×107 Required: The total charge of in the red blood…

Q: The following are electron carriers in a hypothetical biological system: Electron Carriers (E,) A…

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Q: Q8: A solid specimen of dielectric dielectric constant of 4.0, shown in the figure has an internal…

A: Given: Dielectric constant εr=4 Internal void thickness = d1=1mm Specimen thickness = 1 cm Breakdown…

Q: 2 of 7 826 words A certain parallel-plate capacitor has two 3.5 cm-diameter-disks spaced 2.8 mm…

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Q: The electric field strength between the plates of a simple air capacitor is equal to the voltage…

A: Voltage across capacitor is Electric field is Note:Find:Distance between the plates.

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.