Here a=17cm , b=8cm and the three charges are q1=33μC , q2=22μC , q3=20μC a) Calculate the potential at the controid( point p ) of the triangle. b) Consider a spherical surface of radius r=5a centred at p. Find the total electric flux through the surface.

A disk of radius R has a surface charge distribution with density given by σ(ρ) = σ0ρ/R, where σ0 is a positive constant and ρ is polar coordinate. a) Calculate the electric potential for points on the disk axis. b) Explain how you would proceed to calculate the electric field from the result obtained in a).

A disk with radius R has uniform surface charge density . By regarding the disk as a series of thin concentric rings, calculate the electric potential V at a point on the disk’s axis a distance x from the center of the disk. Assume that the potential is zero at infinity.

3/20 Axis R 2R 3R 4R Consider an infinitely long nonconducting cylindirical shell of inner radius R and outer radius 2R as shown in the figure. The volume charge density of the cylinder Shell is p = 9r, where r is the distance from the axis of the cylinder. Find the potential difference (AVAB = V - V.) between points A and B at distances 3R and 4R from the axis respectively. (Note: R=40cm, 1 = 3 and ɛ, = 9. 10-12 ()) a) -2,24x10 V b) 2,24x10°V c) -4,3x101°v 4,3x101°V e) -1,57x1012y d) Seçtiğiniz cevabın işaretlendiğini görene kadar bekleyiniz. Soruyu boş bırakmak isterseniz işaretlediğ MacBook Air DII F1 F2 F3 F4 F5 F6 F7 F8 @ %23 2$ 1 2 4 6. 7 8. Q W E R Y U S D F G H. 品:

21 (27). The lead wire bent in a semicircular shape is uniformly charged S with propaganda charge density, as shown in Figure P24.21. Find the potential at point zero. the table the table 2R 0. R Figure P24.21 2R

A capacitor consists of 3 spherical shells with radiuses r, 2r and 4r. The first and third shells are connected to earth but the second one has charge 5Q, calculate the capacity and the charge on the third ( outer) shell.

A newly constructed spaceship has a length of 100.0 m (as measured in the rest frame). This spaceship departs the Earth, bound for a distant planet located a distance D = 50.0 light-years away from the Earth. It travels at a constant speed of v = 0.900c.   Part A) As measured by Mission Control on Earth, how long does the journey take? Enter the numerical value in units of years. Part B) According to an astronaut on the spaceship, how long does the journey take? Enter the numerical value in units of years. Part C) As measured by Mission Control on Earth, what is the spaceship's apparent length? Enter the numerical value in SI units

Find the electric potential inside and outside of a solid sphere with homogeneous volumetric charge distribution, radius R and total charge Q. Also calculate the potential gradient obtained in each region and check that the correct electric field is obtained.

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A thin circular disc of radius a has a total charge Q uniformly distributed over it. It lies in the x - y plane, centered on the origin. The charge density on the disc is p(F) = e ng² 8(2') for x2 + y2 ≤a² and 0 elsewhere. Calculate (a) the electrostatic potential and (b) the electric field at a general point z on the positive z axis.