a volume V in vacuum is boundary by a surface S consisting of several separate conducting surfaces Si one conductor is held at unit potential and all the other conductors at zero potential
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- NEED ASAPA certain substance has a dielectric constant of 2.4 and a dielectric strength of 17 MV/m. If it is used as the dielectric material in a parallel-plate capacitor, what minimum area should the plates of the capacitor have to obtain a capacitance of 9.3 × 10-2 µ F and to ensure that the capacitor will be able to withstand a potential difference of 4.0 kV?13) a) A ring of charge sits in the xy plane. It has a radius of 0.25 m and a linear charge density of A = 0.2C/m. What is the electric potential at a point z directly above its center? b) What is the magnitude and direction of the electric field at that point where you computed the potential? Z R
- A spherical conductor has a radius of 14.0 cm and a charge of 62.0 µC. Calculate the electric field and the electric potential at the following distances from the center. (а)r %3D 8.0 сm magnitude MN/C direction electric field there is no direction electric potential there is no direction This would be correct if the charge were located at the origin. MV (b) r = 26.0 cm magnitude direction electric field MN/C ---Select--- electric potential MV ---Select--- (c) r = 14.0 cm magnitude direction electric field 28.47 MN/C outward electric potential 3.98 MV ---Select---E=-VV from the potential A electric field can calculated by using The potential at (x y z) due to a point of charge q at its origin is given by Can you please find the (x y z) components of electric field at point P. V=- kq (x²+y°+z°)!2A capacitor consists of a set of two parallel plates of area A separated by a distance d. The capacitor plates carry charges +Q and -Q. If the separation between the plates is doubled, the potential difference between the plates will:?
- In (Figure 1), the charge q = 3.97 x 10-⁹ C. Figure -1.00 m -29 0 X +5q O 1.00 m 1 of 1 Part A Find the value of x between -1.00 m and 0 where the electric potential is zero. Express your answer to three significant figures and include appropriate units. Value Submit Part B HÅ O Greater than zero Submit O Less than zero O Equal to zero Part C At values of a to the left of -1.00 m, do you expect the electric potential to be greater than, less than, or equal to zero? Request Answer Submit Value Provide Feedback Units Request Answer Calculate the electric potential at x = -2.00 m. Express your answer to three significant figures and include appropriate units. μA B ? Units Request Answer ?Is the electric potential necessarily constant over the surface of a conductor? True or False7) An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 13 mm and 85 mm. The electric potential of the inner conductor with respect to the outer conductor is -600 V. (k-1/4mco -8.99 x 109 N m2/C2) The maximum energy density of the capacitor is closest to?
- I Review A typical cell has a membrane potential of -70 mV, meaning that the potential inside the cell is 70 mV less than the potential outside due to a layer of negative charge on the inner surface of the cell wall and a layer of positive charge on the outer surface. This effectively makes the cell wall a charged capacitor. Because a cell's diameter is much larger than the wall thickness, it is reasonable to ignore the curvature of the cell and think of it as a parallel- plate capacitor. Part A How much energy is stored in the electric field of a 50-um-diameter cell with a 7.0-nm-thick cell wall whose dielectric constant is 9.0? Express your answer with the appropriate units. HẢ ? -17 Uc = 3,905 • 10 J Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remainingLibrary CARES Drive to Video da Tutors utor J Context dShelf Digital A solid spherical conductor has a radius R and has a charge Q. Assume the potential is zero at infinity. Consider points inside the sphere, r < R, which of the following statements best describes the behavior of the electric potential, V,inside the sphere: O The electric potential is a non zero constant everywhere inside the sphere O The electric potential is zero everywhere inside the sphere, O The electric potential is proportional to the distance from the center Ohe electric potential is inversely proportional to the distance squared O The electric potential is inversely proportional to the distance cubed from the center 31Consider a solid insulating sphere which has a total chargeof +3Q but is distributed as ρ(r) = βr, and has a radius of a. This issurrounded by a conducting shell that has a charge of −3Q placed onits outer surface. The inner radius is b and the outer radius is c. a) Determine β in terms of Q and a.b) Find the potential at all points in space