Charges
Coulombs law
Electric Fields
Electric Potential Difference
Miscellaneous
100
-1.6 x 10^-19 C
What is the charge of an electron
100
What is the magnitude of the electrostatic force between two electrons separated by a distance of 1.00 × l0– 8 meter?
2.30 × 10–12N
100
The direction of the electric field at a point in space is defined as the direction of the force exerted by the field on a
positive test charge located at that point
100
n ionized calcium atom has a charge of +2 elementary charges. If this ion is accelerated through a potential difference of 2.0 × 103 volts, the ion's change in kinetic energy will be
4.0 × 103 eV
100
A dry plastic rod is rubbed with wool cloth and then held near a thin stream of water from a faucet. The path of the stream of water is changed, as represented in the diagram below.
Which force causes the path of the stream of water to change due to the plastic rod
electrostatic
200
Elementary particles are only _________numbers.
Whole
200
What is the approximate electrostatic force between two protons separated by a distance of 1.0 × 10–6 meter?
2.3 × 10–16 N and repulsive
200
Which diagram best represents the electric field near a positively charged conducting sphere?
A) 
B) 
C) 
D) 
200
The work per unit charge required to move a charge between two points in an electric circuit defines electric
potential difference
200
When a plastic rod is rubbed with wool, the wool acquires a positive charge because
electrons are transferred from the wool to the rod
300
4 electrons have a charge of...
-6.4 x 10^-19C
300
The diagram below shows two metal spheres charged to +1.0 × 10-6 coulomb and +3.0 × 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
3.6 N
300
What is the sign of the charge of each sphere?
Sphere A is negative and sphere B is positive
300
What is the total amount of work required to move a proton through a potential difference of 100. volts?
1.60 × 10 –17 J
300
When a rod is brought near a neutral electroscope, the leaves diverge. Which statement best describes the charge on the rod?
It may be positive or negative.
400
What is the charge on a proton?
1.6x10^-19
400
A point charge of +3.0 × 10-7 coulomb is placed 2.0 × 10-2 meter from a second point charge of +4.0 × 10-7 coulomb. The magnitude of the electrostatic force between the charges is
2.7 N
400
The magnitude of electric force exerted on a small positive charge located between two oppositely charged parallel plates is
the same everywhere between the plates
400
If 20 joules of work is used to transfer 20 coulombs of charge through a 20-ohm resistor, the potential difference across the resistor is
1 V
400
Which procedure will double the force between two point charges
doubling the magnitude of one charge
500
Two metal spheres are brought together- one has a charge of -7 x 10^-6C and the other has a charge of +3 x 10^-6C. What is the final charge on each sphere?
-2 x 10^-6C
500
What is the magnitude of the electrostatic force exerted on an electron by another electron when they are 0.10 meter apart?
N
500
A charged particle is located in an electric field where the magnitude of the electric field strength is newtons per coulomb. If the magnitude of the electrostatic force exerted on the particle is newton, what is the charge of the particle?
1.5 x 10–6 C
500
A potential difference of 10.0 volts exists between two points, A and B, within an electric field. What is the magnitude of charge that requires 2.0 × 10–2 joule of work to move it from A to B?
2.0 × 10–3 C
500
At point P in an electric field, the magnitude of the electrostatic force on a proton is 4.0 × 10–10 newton. What is the magnitude of the electric field intensity at point P?
2.5 × 109 N/C