Related questions
1) In figure 1, R is a circular ring of charge having line charge density λ and radius 3cm. Find, in terms of
λ, the net electric field at point P which is 15cm away along the axis of the ring.
2) The ring in figure 1 is now replaced by a circular disk having the same radius (3cm) and a constant
surface charge density of δ = +4µC/m 2 . In this new configuration, find the net electrostatic force on a
proton if it is placed at point P.
3) Figure 2 shows two concentric rings of radii R
and R’ = 3R that lie on the same plane. Point N
lies on the central z-axis, at distance D = 2R
from the center of the rings. The smaller ring
has uniformly distributed charge +Q. In terms of
Q, what is the uniformly distributed charge on
the larger ring if the net electric field at N is
zero?
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- Assume you have a line of positive charge with a linear charge density of 10.0 µC/m. Assume that this line of charge is infinitely long and lies on the z-axis (which is perpendicular to both the x- and y-axes). a) Find the strength and direction of the electric field associated with this line of charge at (0.5 m, 0 m, 0 m) The strength of the field at the stated point is N/C and the direction of the field at the stated point is O-x O+x O-y O+y O-z O+z b) Find the strength and direction of the electric field associated with this line of charge at (0 m, 0.5 m, 5 m) The strength of the field at the stated point is N/C and the direction of the field at the stated point is O-x O+x O-y O+y O-z O+z c) Find the strength and direction of the electric field associated with this line of charge at (2.0 m, 0 m, Om) The strength of the field at the stated point is N/C and the direction of the field at the stated point is O-x O+x O-y O+y O-z O+zarrow_forwardIn Figure 2, a sphere of radius r = 0.42 m carries a uniform volume charge density of rho = 2.3 × 10^-10 C/m^2. A spherical cavity of radius 0.21 m is then cut out and left empty as shown in the figure. Points A and C are the centers of the sphere and the spherical cavity, respectively. Find the magnitude and direction of the electric field at point B.arrow_forwardI Review A positive point charge q sits at the center of a hollow spherical shell. The shell, with radius R and negligible thickness, has net charge -2q. Part A Find an expression for the electric field strength inside the sphere, r R. Give your answer as a multiple of q/e0. ? Submit Request Answer 圓arrow_forward