Physics Electrostatics Level: High School
electric fieldThe Magnitude of force exerted on charge q1 by q3 is 7.63 N. What is the horizontal component of force exerted on q1 by q3?
1) 0 N
2) 0.108 N
3) 3.77 N
4) 5.39 N
5) 7.63 N
6) 10.8 N
Question Diagram
Physics Electrostatics Level: High School
electric fieldWhat is the magnitude of force exerted on charge q1 by charge q3 in the diagram?
1)0 N
2)0.108 N
3)3.77 N
4)5.39 N
5)7.63 N
6)10.8 N
Question Diagram
Physics Electrostatics Level: High School
ELECTRIC FIELDWhat is the magnitude of force exerted on charge q1 by q2 in the diagram?
1) 0 N
2) 0.108 N
3) 3.77 N
4) 5.39 N
5) 7.63 N
6) 10.8 N
Question Diagram
Physics Electrostatics Level: High School
the parallel cathode and plate of a vaccum tube are 2 cm apart and have 120 v between them . What is the time required for an alectron to travel from cathode to plate ?1)4.4 x 10^-9 sec
2)6.2 x 10^-9 sec
3)7.8 x 10^-8 sec
4)11.7 x 10^6-8 sec
Physics Electrostatics Level: High School
An electron is shot into an electric field, and enters the field at right angles to it. The field exerts a force on the electron. The direction of this force vector is:-1)The same as the field strength vector.
2)Opposite to the field strength vector.
3)Either (1) or (2) depending on the velocity of the electron as it enters the electric field.
4)The resultant of two vectors, one parallel to and one perpendicular to the field strength vector.
2)Opposite to the field strength vector.
Physics Electrostatics Level: High School
Coulomb’s Law
Two tiny conducting spheres are identical and carry charges of -20.0 micro C and +52.0 micro C . They are separated by a distance of 2.00 cm . The spheres are brought into contact and then separated to a distance of 2.00 cm . Determine the magnitude of the force that each sphere now experience .
Physics Electrostatics Level: High School
Coulomb’s Law
A point charge of -0.75 micro C is fixed to one corner of a square .An identical charge is fixed to the originally opposite corner . A point charge q is fixed to each of the remaining corners . The net force on either of the charges q is zero . Find the magnitude and algebraic sign of q . micro C .
Physics Electrostatics Level: High School
Coulomb’s Law
The force of repulsion that two like charges exert on each other is 3.3 N . What will the force be if the distance between the charges is increased to 4 times its original value ?
Physics Electrostatics Level: High School
Coulomb’s Law
Two charges attract each other with a force of 1.0 N . What will be the force if the distance between them is reduced to one-ninth of its original value ?
Physics Electrostatics Level: High School
A large , flat, non conducting sheet with a positive surface charge density (sigma) suspends a small pith ball of mass m, and charge q by a thread as shown in the figure at “click here”.a) If q = 1.00 micro-coulomb , sigma = 10.0 nC/meter-square and m = 0.100 g , Calculate the angle (theta)
b) Calculate the tension in the thread .
Physics Electrostatics Level: High School
Gauss’s Law
The figure at “click here” shows 3 Gaussian surface and the electric flux through each . What are the three charges q1, q2, and q3 .
Physics Electrostatics Level: High School
Charging by Friction
Complete the following statement : When an ebonite rod is rubbed with animal fur , the rod becomes negatively charged as .a) positive charges are transferred from the fur to the rod .
b) negative charges are transferred from the rod to the fur .
c) negative charges are created on the surface of the rod .
d) negative charges are transferred from the fur to the rod .
e) Positive charges are transferred from the rod the fur .
Physics Electrostatics Level: High School
Which one of the following statement is true concerning the work done by an external force in moving an electron at constant speed between two points in an electrostatic field ?a) It is always zero joules .
b) It is always positive .
c) It is always negative .
d) It depends on the total distance covered .
It depends only on the displacement of the electron .
Physics Electrostatics Level: High School
Gauss’s Law
What is the electric flux passing through a Gaussian surface that surrounds a +0.075 C point charge ?a) 8.5 x 10^9 N*m^2/C
b) 6.8 x 10^8 N*m^2/C
c) 1.3 x 10^7 N*m^2/C
d) 4.9 x 10^6 N*m^2/C
e) 7.2 x 10^5 N*m^2/C
Physics Electrostatics Level: High School
What is the magnitude and direction of the electric force on a -1.20 micro C at a point where the electric field is 2500 N/C and is directed along the +y axis .a) 0.15 N , -y direction
b) 0.15 N , +y direction
c) 0.0030 N , -y direction
d) 0.0030 N , +y direction
e) 4.3 N , +x direction
