At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 339 N/C. At a distance r2 from the charge, the field has a magnitude of 127 N/C. Find the ratio r2/r1

Charge of a uniform density (11 pC/m?) is distributed over the entire xy plane. A charge of uniform density (6 pC/m2) is distributed over the parallel plane defined by z = 2.0 m. Determine the magnitude of the electric field for any point with z = 3.0 m.

A thick insulating spherical shell of inner radius a=1.2R and outer radius b=9.8R has a uniform charge density p. PR, What is the magnitude of the electric field at r=3.5 R ? Express your answer using one decimal place in units of €0

A metal sphere with a surface area of 0.283 m2 carries a charge of +2.0μC uniformly distributed over its surface. What is the magnitude of the electric field?

The figure gives the magnitude of the electric field inside and outside a sphere with a positive charge distributed uniformly throughout its volume. The scale of the vertical axis is set by E = 5.8 × 107 N/C. What is the charge on the sphere? 8 16 r(cm) Number i Units E (107 N/C)

A charge of –25 µC is distributed uniformly over the surface of a spherical conductor of radius 11.0 cm. Determine the electric field (in N/C) due to this charge at the following distances from the center of the sphere. (Enter the radial component of the electric field.) (a) 7.0 cm E - (0 = (b) 8.0 cm E = (c) 22.0 cm E = X N/C f

6. A solid non-conducting sphere of radius a= 4 cm has a uniformly distributed volumetric charge density p+= 3 nC/m³. It is surrounded by a non-conducting concentric spherical shell of internal radius b= 10 cm and external radius c= 13 cm, which has a uniformly distributed volumetric charge density p-=-3 nC/m³. +p Calculate the magnitude of the electric field for r= 1 cm. a) E= 8.6629 N/C b) E= 0.565 N/C c) E= 1.1299 N/C d) E= 0.4237 N/C

In the figure, a point charge 2.5 C is a distance d/2 directly above the center of a square of side 4.0 mm. What is the magnitude of the electric flux through the square?

Consider a spherical conducting shell of inner radius a=0.1 m and outer radius b= 0.15 m. The shell carries a net charge of Q= +49 nC. A point charge of -1 nC is placed at the center, as shown in the figure. Find the surface charge density (in nC/m2) on the outer surface of the shell. Conductor with a net charge + Q -1 nC a

A metal sphere of radius 2.0 cm carries a charge of 3.0 micro C. What is the electric field 6.0 cm from the center of the sphere?