Physics Electrostatics Level: Misc Level
Find the ratio of Fe/Fg (f sub e and f sub g) of the electric force and the gravitaional force exerted by the proton on the electron.
Physics Electrostatics Level: Misc Level
A particle having a charge q=3x10^-5 C moves from point a to b,a total linear distance of .5 meter. If the mass of the charge is 5x10^-5 kg and the electric field is uniform and in the direction of a to b E= 200 N/C what is the increase in energy in e V?in Joules?How fast is the particle going at point b?
Physics Electrostatics Level: Misc Level
A spherical balloon with a 6 cm radius has charge distributed over its surface. at a distance of 50 cm from the center of the balloon the electric field strenth is 7.2 x 10^4 N/c.
a) what is the magnitude of the charge on the balloon
b)what is the electric field strength 3 cm from the center of the ballon
c) '' '' '' '' '' ''18 cm '' '' '' '' ''
d) what is the electric potential inside the balloon
e) what is the electric potential 18 cm from the center of the balloon?
Physics Electrostatics Level: Misc Level
A total charge of 100 micro C is distributed uniformly throughout a spherical region of space with a radius of 20.0 cm. Find the electric field strenght at a) r=10 cm from the center of the sphere b) r=30 cm from center of sphere c) what is the volume charge density?
Physics Electrostatics Level: Misc Level
A uniform electric field of 2 x10^5 N/C parallel to the positive z axis fills all of space. compute the electric flux through a rectangle of 4.8 m^2 if the rectangle is placed a) in the xyplane b) in the yz plane c) the plane makes an angle of 30 degrees with the y axix of the origin.
Physics Electrostatics Level: Misc Level
A rod 80 cm long is charged with a charge density of 40 miccro C/m. A charge of 20 micro C is placed 80 cm from the midpoint of the rod and along a line perpendicular to it Calculate the electric field a point midway between the point charge and the center of the rod.
Physics Electrostatics Level: Misc Level
The effective area of each plate of a parallel plate capacitor is 2.4 ,m^2.The capacitor is filled with neoprene rubber (k=6.4). When a 3.0V potential difference exists across the plates of the capacitor, the capacitor stores 5.0uC of charge. Determine the plate separation of the capacitor.
(a) 7.2 x 10^-5 m
(b) 3.0 x 10^-4 m
(c) 1.7 x 10 ^-4 m
(d) 5.3 x 10^-4 m
(e) 8.2 x 10^-5 m
Physics Electrostatics Level: Misc Level
The magnitude of the charge on the plates of an isolated parallel plate capacitor is doubled. Which one of the following statements is true concerning the capacitance of this parallel- plate system?
(a) The capacitance is decreased to one half of its original value
(b) The capacitance is increased to twice it original value<--my answer
(c) The capacitance remains unchanged
(d) The capacitance depends on the electric field between the plates
(e) The capacitance depends on the potential difference across the plates
Physics Electrostatics Level: Misc Level
Which one of the following statements concerning electrostatic situations is false?
(a) E is zero everywhere inside a conductor
(b) Equipotential surfaces are always perpendicular to E
(c) It takes zero work to move a charge along an equipotential surface
(d) If V is constant throughout a region of space then E must be zero in that region
(e) No force component acts along the path of a charge as it moved along the equipotential surface<----my answer
Physics Electrostatics Level: Misc Level
If an electron,which has a charge of 1.60 x 10^-19C, is moved from rest at A to rest at B, what is the change in electric potential energy of the electron?
(a) +4.3 x 10^-15 J
(b) + 5.4 x 10^-15 J
(c) -2.1 x 10^-14 J
(d) -3.2 x 10^-14 J
(e) zero joules<-----my answer
Physics Electrostatics Level: Misc Level
Two pont charges lie on the x axis. A charge of +9.9 uC is at the origin, and a charge of -5.1 uC is at x=10.0 cm. (a) At what position x would a third charge q3 be in equilibrium.(b) Does your answer to part (a) depend on whether q3 is positive or negative, explain,
Physics Electrostatics Level: Misc Level
When adhesive tape is pulled from a dispenser, the detached tape acquires a positive charge and the reaming tape in the dispenser acquires a negative charge.If the tape pulled from the dispenser has .14 uC of charge per centimeter, what length of tape must be be pulled to transfer 1.8x10 to the 13 th pwr electrons to the reaming tape
Physics Electrostatics Level: Misc Level
The electric potential of a system as a function of position along the axis is given in figure 20-22.(a) In which of the regions,12,3,or 4 do you expect E sub x to be greatest. In which region does E sub x have its greatest magnitude. Explain .(b) calculate the value of E sub x in each of the three regions 1,2,3, and 4.
Physics Electrostatics Level: Misc Level
The earth has an electric field with a magnitude of approximatly 100v/m near its surface.What is the potential difference between a point on the ground and a point on the same level as the top of the Washington Monument (555 ft high).
Physics Electrostatics Level: Misc Level
A test charge is being acted on by force Fe. Write an expression for the electric field E in terms of electric force Fe and test charge q2. If Fe=5 N and q2=3.2 x10-19 C, what is E?
