Basics of Electrostatics
Coulomb's Law
Coulomb's Law Calculations
Coulomb's law calculations 2
Electric charges
100
The particle that is transferred from one object to another object during the charging process?
What is the electron?
100
The sign of the charge on B if the charge on A is negative.
What is negative?
100
Two ping pong balls have been painted with metallic paint and charged by contact with an Van de Graaff generator. The charge on the balls are -4.87x10-7 C and -4.51x10-7 C. Determine the force of electrical repulsion when held a distance of 57.1 cm apart.
0.00606 N
100
The repulsive force between two charged spheres is 5 N. What will be the repulsive force between the spheres when the charge on one sphere is doubled?
10 N
100
What do you do to a neutral object to make it negatively charged?
Add electrons to it.
200
The name given to the standard unit measuring the charge of a particle/object?
What is the Coulomb?
200
The name of the law that describes the relationships between charges, distance, and electrical forces exhibited between two (or more) charged particles?
What is the Coulomb's Law?
200
A Styrofoam plate with a negative charge of -4.63 x 10-7 C is placed near an aluminum dish which has been charged positively by induction to a charge of +8.39 x 10-8 C. The centers of positive and negative charge are positioned 2.98 cm apart. Make the assumption that the two objects act as point charges and determine the magnitude of the force of attraction between the Styrofoam plate and the aluminum dish.
0.394 N
200
The repulsive force between two charged spheres is 5 N. What will be the repulsive force between the spheres when the charge on one sphere is doubled while the charge on the other sphere is tripled?
30 N
200
What do you do to a neutral object to make it positively charged?
Remove electrons from it.
300
The kind of electrical interaction between two like charges.
What is repulsion?
300
Complete the sentence: As the distance between two charged objects INCREASES, the net electrical force they exhibit on one another ________.
DECREASES
300
Two point charges are separated by 4.4 cm. The attractive force between them is 30 N. If the charges attracting each other have equal magnitude, find the magnitude of each charge.
2.54 x 10-6 C
300
The repulsive force between two charged spheres is 5 N. What will be the repulsive force between the spheres when the distance between the spheres is halved?
20 N
300
What is the net charge on neutral objects?
zero
400
Another method of charging aside from by friction and by conduction.
What is by induction?
400
Complete the sentence: As the magnitude of the charges, q1 and q2, increases, the electrical force between them _______.
increases
400
A negative charge of -0.0005 C exerts an attractive force of 9.0 N on a second charge that is 10 m away. What is the magnitude of the second charge?
2 x 10-4 C
400
The repulsive force between two charged spheres is 5 N. What will be the repulsive force between the spheres when the charge on one sphere is tripled?
5/9 N or 0.56 N
400
The diagram shows the materials in the triboelectric series chart. When glass is rubbed with nylon, what will be the sign of the charge on the glass?
Positive
500
The value of the elementary charge, e.
What is 1.60 x 10-19 C?
500
It is the value of the Coulomb constant (include the unit).
What is 9.0 x 109 N.m2/C2?
500
Two negative charges that are both -3.0 C push each other apart with a force of 19.2 N. How far apart are the two charges?
64951.91 m
500
The repulsive force between two charged spheres is 5 N. What will be the repulsive force between the spheres when the charge on one sphere is doubled, the charge on the other sphere is halved, while the distance is reduced to one-third the initial distance?
45 N
500
An object has 500 more electrons than protons. What is the sign of the charge on the object?
negative