Physics Electrostatics Level: Misc Level
Each of two small spheres is positively charged ,the combined charge totalling 4 10-8 C. What is the charge on each sphere if they are repelled with a force of 2.7 10-5 N when placed 0.1 metres apart?
Physics Electrostatics Level: Misc Level
Two large, parallel, conducting plates are 17 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electroststic force of 4.8 x 10-15 N acts on an electron placed anywhere between the two plates. ( Neglect fringing.) (a) Find the electric field at the position of the electron. (b) What is the potential differnce in volts between the plates
Physics Electrostatics Level: Misc Level
What are (a) the charge and (b) the charge density on the surface of a conducting sphere of 0.15 m whose potential is 180 V (with V=0 at infinty)?
Physics Electrostatics Level: Misc Level
An infinite line of charge produces a field of magnitude 4.1 x 104 N/C at a distance of 1.5 m. Calculate the linear charge density
Physics Electrostatics Level: Misc Level
A 10 -cm diameter metal sphere produces an electric field of 5,000 N/c towards the sphere at a point 25 cm the surface of the sphere.
a. The charge on the sphere i is--
b. the voltage at the center of the sphere is --
Physics Electrostatics Level: Misc Level
Two point charges are placed on the x-y plane at the coordinates:q1 =+4 at ( 15 cm) and q2 =-6
at ( - 10 cm, 10 )
a. The voltage at the origin is ---
b. the force on a +3 placed at the origin is ---
Physics Electrostatics Level: Misc Level
Two small beads having positive charges 24 q and q are fixed at the opposite ends of a horizontal insulating rod, extending from the origin (the location of the larger charge )to the point x =d. As shown in Figure. A third small charged bead is free to slide on the rod. At what position is the third bead in equilibrium?
Physics Electrostatics Level: Misc Level
Suppose an electron is released from rest in a uniform electric field whose strength is 5.90 x 10 to the 3 rd V /m.
(a) Through what potential difference will it have passed after moving 1.00 cm?
(B) How fast will the electron be moving after it has traveled 1.00 cm?
Physics Electrostatics Level: Misc Level
The absolute potential at the exact center of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolute potential at the square's center when each of the other corners is also filled with a charge of + Q ?
a) zero
b) 3.0V
c)9.0 V
d) 12.0V
Physics Electrostatics Level: Misc Level
Is there a point along the line joining two equal positive charges where the electric field is zero? Explain.
Physics Electrostatics Level: Misc Level
How much energy is stored by the electric field between two square plates 8.0 cm on a side, separated by a 1.5 mm air gap, the charge on the plate are equal and opposite and of magnitude 420 u C.
Physics Electrostatics Level: Misc Level
a point charge q create an electric potential of + 125 v at a distance of 15 cm. what is q ?
Physics Electrostatics Level: Misc Level
A pair of charged plates is used to accelerate singly ionized aluminum to 1250 m/s. The plates are 0.10 m apart. What is the voltage across the plates?
Physics Electrostatics Level: Misc Level
You have two pith balls separated by a distance of 0.01 meters. Pith ball A has 340 extra electrons, and pith ball B has given up 76 electrons. Find the total charge on each pith ball. Then calculate the force on A and the force on B and draw arrows on a picture that indicates the magnitude and direction of these forces.
Physics Electrostatics Level: Misc Level
What is the rule of electrical charges?
A. All electrical charges are attached to one another.
B. Unlike charges repel each other.
C. Like charges repel each other.
D. For each negative charge a positive charge must accompany it.
