Physics Electrostatics Level: High School
A charge is placed on the x-axis (q = +10 micro Columbs , x = -0.6 m) , and another charge is placed on the y axis (q = +15 microColumbs , y = 0.8 m ) . A third charge (q = -6 microColumbs, m = 7 x 10^-8 kg) is placed at the coordinate origin . If the charge at the origin were free to move , what would be,a) the magnitude of its acceleration ?
b) the direction of its acceleration ?
Specify the answer as an angle relative to the –x axis .
Physics Electrostatics Level: High School
Two spherical shells have a common center . A +2 x 10^-6 C charge is spread uniformly over the inner shell , which has a radius of 0.1 m . A -5 x 10^-6 C charge is spread uniformly over the outer shell , which has a radius of 0.2 m . Find the magnitude and direction of the electric field at a distance (measured from the common center ) of :a) 0.05 m
b) 0.15 m
Physics Electrostatics Level: High School
An electron and a proton are 0.53 x 10^-10 m apart .a) What is their dipole moment if they are at rest ?
b) What is the average dipole moment if the electron revolves about the proton in a circular orbit ?
Physics Electrostatics Level: High School
An electron starts from rest 72.5 cm from a fixed point charge with Q = -0.125 micro C . How fast will the electron be moving when it is very far away ?
Physics Electrostatics Level: High School
An electron starting from rest acquires 2.0 keV of kinetic energy in moving from point A to point B .a) How much kinetic energy would a proton acquire , starting from rest at B and moving to point A ?
b) Determine the ratio of their speeds at the end of their respective trajectories .
Physics Electrostatics Level: High School
An alpha particle (which is a helium nucleus , Q = +2e , m = 6.64 x 10^-27 kg) is emitted in a radioactive decay with kinetic energy 5.53 MeV . What is its speed ?
Physics Electrostatics Level: High School
What is the speed of(a) a 3.5 keV (kinetic energy) electron
(b) a 3.5 ke V proton ?
Physics Electrostatics Level: High School
How much work must be done to bring three electrons from a great distance apart to within 1.0 x 10^-10 m from one another ?
Physics Electrostatics Level: High School
Two charged bodies separated by a distance d exert an electrical force on each other . The distance d is increased 4 times . The electrical on each body now isa) ¼ of the initial force .
b) 1/16 of the initial force .
c) The same.
d) Twice greater .
e) None of the above .
Physics Electrostatics Level: High School
The capacitance of a portion of a circuit is to be reduced from 4800 pF to 2900 pF . What capacitance can be added to the circuit to produce this effect without removing existing circuit elements ? Must any existing connection be broken in the process ?
Physics Electrostatics Level: High School
A 15 micro F capacitor is connected to a 50-V battery and becomes fully charged . The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the dielectric has a dielectric constant of 5.0, what is the voltage across the capacitor’s plates after the slab is inserted ?
Physics Electrostatics Level: High School
Two parallel plates, separated by 0.20 m are connected to a 12-V battery . An electron is released from rest at a location 0.10 m from the negative plate . When the electron arrives at a distance 0.05 m from the positive plate , what is the speed of the electron ?
Physics Electrostatics Level: High School
A point charge of +Q is placed at the center of an equilateral triangle . When a second charge of +Q is placed at one of the triangle’s vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices ?
Physics Electrostatics Level: High School
The battery has a potential difference of V = 10.0 V and the five capacitors each have a capacitance of 10.4 micro F. What is the charge in microcoulombs on (a) capacitor 1 and (b) capacitor 2 ?
Physics Electrostatics Level: High School
Find the equivalent capacitance of the combination in the circuit as shown in the figure at ‘click here’ . Assume that C1 = 10.5 microF, C2 = 5.44 micro F, and C3 = 5.91 micro F .