- Define electric field.
The electric field is a region around a charged particle where a force would be exerted on other charged particles.
Drawings that represent the vectors that are the paths of attraction and repulsion between two particles in an electric field:
Note: I don't have the capability to draw, but I can describe it.
- Attraction: Vectors pointing towards each other represent the attraction between opposite charges (e.g., positive and negative).
- Repulsion: Vectors pointing away from each other represent the repulsion between like charges (e.g., positive and positive or negative and negative).
The amount of electric potential energy that exists for a charge at any point in an electrical system; the electric potential energy divided by the charge at that point:
This is defined as electric potential (or voltage).
The amount of energy that acts on a charge at a particular point in an electric field:
This is what we refer to as electric potential energy.
An aura, or electrical energy cloud, that surrounds each charge:
This can be thought of as the electric field surrounding a charge.
- Choose True or False.
Electric force is a vector quantity.
True
- Choose the best answer.
If electricity does not flow between two charges, it is because the electric potential of the two charges are _____.
equal
- Choose the best answer.
Charge A possesses a higher charge than charge C. As a result, electricity will flow _____.
from C to A
- Choose the best answer.
Define lines of force.
drawings that represent the vectors that are the paths of attraction and repulsion between two particles in an electric field
- Choose True or false.
Two particles in an electric field are quite close together; as a result, the lines of force are completely straight.
False
- Match with the corresponding formula or drawing.
The difference between electrical potential at different points in an electrical system.
voltage
- Match with the corresponding formula or drawing.
Two charged points in an electric field move toward each other, so their potential energy changes.
voltage
- Match with the corresponding formula or drawing.
Lines of force
lines of force
- Match with the corresponding formula or drawing.
Electric potential of any one charge in a system
voltage
- Choose True or False.
You can shield an object from an electric field but not from a gravitational field.
True
- Choose the best answer.
Define electric potential energy.
the amount of electric potential energy that exists for a charge at any point in an electrical system; the electric potential energy divided by the charge at that point
- Match the concept with the units.
Electrical Potential Energy (E.P.E)
joule
- Choose the best answer.
Define electric potential.
the difference between the electric potential of any two charges in an electrical system; expressed in volts, it is responsible for the flow of electricity in a system
- Choose True or False.
If one area of an electric field is stronger, the lines of force will be shown closer together, whereas if one area of an electric field is weaker, the lines of force will be farther apart.
True
- Match the concept with the units.
electric potential
volt
- Match the concept with the units.
Quantity of charge transferred across a conductor in which a constant current of one ampere exists.
coulomb
- Choose the best answer.
Using the formula, determine the electric potential if 52.6 joules of potential energy are present at a point in an electrical system that has a charge of 7.6 • 10^-6 C.
6934.21 volts (Using the formula V = E/Q, where E = 52.6 J and Q = 7.6e-6 C, V = 52.6 / 7.6e-6)
- Choose the best answer.
Capacitors are rated in ____, the SI unit that is a measurement of the ability to store charge.
farads
- Choose the best answer.
Define potential difference.
the difference between the electric potential of any two charges in an electrical system; expressed in volts, it is responsible for the flow of electricity in a system
- Choose True or False.
The potential difference between two points in an electrical system has nothing to do with the flow of electricity.
False
- Choose the best answer.
A closed jar with an interior and exterior metal foil lining, a stopper, and a collector is a _____.
Leyden jar
- Choose the best answer.
A _____ is a device that accumulates and stores electrical charges.
capacitor
- Choose the best answer.
The basic construction of a capacitor is two metal plates kept apart by an insulator called a _____.
dielectric
- Choose the best answer.
An insulator in a capacitor may be composed of air or be _____.
solid
- Choose the best answer.
The two metal plates in a capacitor store charges of opposite _____.
polarity
- Choose the best answer.
The illustration shows a _____ that collects charges in an electric field.
capacitor
- Choose the best answer.
The layer indicated by E is a(n) _____ that collects charges in an electric field.
conductive material
- Choose the best answer.
The name for the layer indicated by F is a(n) _____.
dielectric