Physics chapter 15+16 multiple choice
A combination of two electrons and three protons would have a net charge of
+1.6x10^-19
A stream of water is deflected toward a nearby electrically charged object that is brought close to it. The sign of the charge on the object is
Can't be determined by the data
A balloon is charged and then climbed to a wall. The sign of the charge in the balloon is
Can't be determined by this data
How does the magnitude of the electric force between two points charges change as the distance between them increases
Decreases
An electron is just above a fixed proton. The direction of the force in a proton is
Down
At a point in space, an electric force acts vertically upward on an electron. The direction of the electric field at that point is
Down
Two electrons are placed on the y axis, one at y=20 and one at y= -20. What is the direction of the field at the location y=0 and x=40
Down
What is the field location at y=40 and x= 0
Down
If you wanted to change the amount of charge on each of the particles by the same amount so that the force between them went back to its original value, what would you do
Increase each charge by three times
The SI unit of electric field are
N/C
A rubber rod is rubbed with fur, so that the fur becomes positive. The rod is then used to charge an electroscope. The charge on the electroscope will be
Negative
The direction of the electric field at the surface of a charger conductor under electrostatic conditions is
Perpendicular to the surface
How is the magnitude of the electric field due to a point charge reduced when the distance from that charge is tripled
Reduced one ninth to its original value
If the distance between two charged particles is tripled, what happens to the magnitude of the electric force each exerts on each other
Reduced to one ninth its original value
Which one feels the greater magnitude of force
They are the same
Compared with the electric force, the gravitational force between two protons is
Very much smaller
An uncharged thin metal slab is placed in an external electric field that point horizontally to the left. What is the electrics field inside the slab
Zero
In an electrostatic equilibrium is the electric field just below the surface of the charged conductor
Zero