WorksheetsElectrostatic Force
Total questions: 12
Worksheet time: 6mins
Which graph best represents the relationship between the magnitude of the electrostatic force and the distance between two oppositely charged particles?
If the charge on each of two small charged metal spheres is doubled and the distance between the spheres remains fixed, the magnitude of the electric force between the spheres will be
two times as great
four times as great
one-half as great
the same
In the diagram above, a positive test charge is located between two charged spheres, A and B. Sphere A has a charge of +2q and is located 0.2 meter from the test charge. Sphere B has a charge of -2q and is located 0.1 meter from the test charge. If the magnitude of the force on the test charge due to sphere A is F, what is the magnitude of the force on the test charge due to
sphere B?
2F
2F
4F
4F
The magnitude of the electrostatic force between two point charges is F. If the distance between the charges is doubled, the electrostatic force between the charges will become
4F
4F
2F
2F
Two positively charged masses are separated by a distance, r. Which statement best describes the gravitational and electrostatic forces between the two masses?
The gravitational force is attractive and the electrostatic force is
repulsive.
The gravitational force is repulsive and the electrostatic force is
attractive.
Both forces are attractive.
Both forces are repulsive.
Two protons are located one meter apart. Compared to the
gravitational force of attraction between the two protons, the electrostatic force between the protons is
weaker and attractive
stronger and attractive
stronger and repulsive
weaker and repulsive
What is the approximate electrostatic force between two protons separated by a distance of 1.0 x 10-6 meter?
9.0 x 1021 N and attractive
9.0 x 1021 N and repulsive
2.3 x 10-16 N and attractive
2.3 x 10-16 N and repulsive
Electrostatic force F exists between two point charges. If the
distance between the charges is tripled, the force between the charges will be
9F
3F
3F
9F
The diagram above shows two negatively charged balloons
suspended from nonconducting strings being held by a student. What occurs as the student brings the balloons closer to each other without allowing them to touch?
The magnitude of the electrostatic force between the balloons increases, and they attract each other.
The magnitude of the electrostatic force between the balloons decreases, and they repel each other.
The magnitude of the electrostatic force between the balloons increases, and they repel each other.
The magnitude of the electrostatic force between the balloons decreases, and they attract each other.
The diagram above shows two metal spheres charged to +1.0 x 10-6 coulomb and +3.0 x 10-6 coulomb, respectively, on insulating stands separated by a distance of 0.10 meter.
The spheres are touched together and then returned to their original positions. As a result, the magnitude of the electrostatic force between the spheres changes from 2.7 N to
1.4 N
14 N
3.6 N
1.8 N
An electrostatic force of magnitude F exists between two metal spheres having identical charge q. The distance between their centers is r. Which combination of changes would produce no change in the electrostatic force between the spheres?
doubling q on both spheres while halving r
doubling q on one sphere while halving r
doubling q on both spheres while doubling r
doubling q on one sphere while doubling r
In the diagram above, two positively charged spheres, A and B, of masses mA and mB are located a distance d apart. Which diagram best represents the directions of the gravitational force, Fg, and the electrostatic force, Fe, acting on sphere A due to the mass and charge of sphere B? [Vectors are not drawn to scale.]
