Consider the equipotential surface of a conductor with total charge +Q shown on the right. In what region is the electric field the strongest? +Q B O E O A O B
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- Гр Figure. The inner cylinder carries a uniformly distributed charge +Q on its surface, and (LOS) Q4. Two concentric cylindrical conducting shells, of radius Fa and rb as shown in the outer shell an equal but opposite charge-Q. Determine the capacitance. +Q ľaThe inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. Bccause of these chargex a potential difference of about0.078 Vexists across the membrane. The thickness of the membrane is7.8×107 m. What is the magnitude of the electric field in the membrane? Number i Units Ne :. Please type answer note write by hend.E- xy k 40 a - How much electric charge is in the cubic ? -How much electric charge is in the cylinder O A very long rod of electrical charge with chap density of 1 is lecated at the axis of a con ductor cylinder ct radius a-6. determir The ekctric field in all points of space. O Determine the electrical potential uayoka long cyfinderical conductor with initiate charge -) 2
- Solve the ff: a. Two alpha particles (helium nuclei), each containing oftwo protons and two neutrons, have an electricalpotential energy of 6.32 x 10 -19 J. What is the distancebetween these particles at this time?b. Two charges are located along the x-axis. One has acharge of 6.4 µC, and the second has a charge of -3.4 µC.if the electrical potential energy associated with the pairof charges is -3.8 x 10 -2 J, what is the distance betweenthe charges?c. A charge moves 2.0 cm in the direction of a uniformelectric field having a magnitude of 220 N/C. the electricpotential energy of the charge decreases by 6.9 x 10 -19J as it moves. Find the magnitude of the charge on themoving particle. (Hint: the electrical potential energydepends on the distance moved in the direction of thefield)What is the expression for work done on a particle of charge q displaced by a distance d at an angle A with a uniform electric field of sthrength E?At 100 kV as shownin the side figüre Concentricspherical and concentric cylindrical electrodeforuse wwwww wwww To make a capacitor consisting of sxstems; a) Electric field intensities of 25 kV/cm onthe inner electrode, spherical and cylindrical so that it does not exceed 10 kV/cm on the electrode, the inner and outer radius (r1k, r2k ve rls , r2s ) valuesfor the sections, calculate. b) Calculate the capacity of the system. ww (er= 1, 80 = 8.854 10-12 F/m ve l = 1m ) rik Tis T2s
- wire Two undharged conducting spheres of radius r, and r, = 2m are placed long enough apart and connected by a wire. The sphere of radius r, is under the electron rain only. Electrons move towards the sphere of radius r,, with the velocity ve = 100m/s. Find the maximum charge that can be found on the sphere of radius r2. me = 9,11x10-31kg, 9x10° () 9. = 1,6x10-1ºC, ke = a) 6,33x10-18C b) 2,53x10-17C c) 5,69x10-17C d) 1,01x10-1°C e) 1,58x10-16CBevw I Conarta In this problem you must first caloulate the potential V at z +L dus to the charged rod. You can then fnd the change in potential energy involved in bringing the point change trom infinity (where V-0) to +L. Positive olectric charge Qis distributed uniformly along a thin rod of length 2a. The rod lies along the z-axis between a -a and a ta Eigure 1). Calculate how much work you must do to bring a positive point chargeg from infinity to the point a+L on the a-axis, where L>a Part A To find V. divide the rod into infinitesimal segments of length de Consider one such segment located at zz. where -asz Sa. What is the potential dV at z+L due to this segment? Express your answer in terms of some or all of the variables Q. a. L, da, . electric constant e, and r, Figure 1 oft > View Available Hint(a) show is side. 78.06707 dV- at wha0 b finliity Submit Previous Anawers round X Incorrect; Try Again; 3 attempts remaining douapadiaA Select - Font Paragraph Styles Editing Voice Sensit A uniform electric field En is directed upwards as shown in the figure. The potential difference between points A and C Vc VA) is -270 V with AB = 54 cm and AC = 49 cm. Find the magnitude of the electric fjeld (in Vim)
- A proton is placed midway between two parallel horizontal conducting plates 2 cm apart in air. What must bethe magnitude of the potential difference between the plates for the electrons to remain stationary? Whatmust be the sign of the charges in each plate?cite1-2 examples of equipotential surfaces and field lines.This practice problem is asking me to write an expression for the electrical potential energy Unet of charge Qo as shown in the diagram. It says I can write the expression without any values and use any of the variables (symbols) shown in the diagram above to write my expression. The second part is asking me to calculate the unknown charge Q2, including its magnitude and correct sign. I am so confused by the first part that I cant move on to the second part.