Chapter 23 & 25 Flashcards
What is an electric field?
The region in which a force is exerted on the charge due to another electric charge causing motion.
How do you determine the direction of the electric field?
With the addition of a point charge or a positive test charge, it will move in the direction of the negative side if put in a parallel plate capacitor and repel the positive side. Similarly if put near a positive charge the test charge will have electric field lines repelling the charge and if put near a negative charge the test charge will have electric field lines that are pointing towards it.
How do you determine the direction of the charge in relation to another charge due to its force?
If the charges are the same then the charges will repel and move away. If the charges are different the charges will attract and move towards.
What is the relationship of an electric field and the electric force?
The electric field lines move from positive to negative however if looking at a force between oppositely charged objects the force will be towards the positive from the negative charge’s perspective due to attraction.
What is a line of charge or linear charge density?
This is the charge that is distributed per unit length of the rod or stick that contains the charge.
What is a parallel plate capacitor?
This is a system that consists of 2 electrodes or conductive material that have opposite signs that generate an electric field.
What is a uniform electric field?
This is where the strength of the electric field has the same strength throughout the entire system and this occurs in a parallel plate capacitor.
What is an electric field line?
This line depicts the force that is exerted by the field on a particle relative to a positive particle.
What is the volume of charge?
This is the charge per volume of the system.
What is the surface of charge?
This is the charge per area of the system.
What is a point charge?
This is the test charge or relative charge that is used to determine the direction of the electric field and it is +1C.
What is linear charge density?
The charge per length.
What is surface area charge density?
The charge per area.
What is volume charge density?
The charge per density.
What is a parallel plate capacitor?
This is a system that is made up of 2 electrodes and a force is exerted due to the electric field generated within it.
What is the electric field in the parallel plate capacitor?
The electric field is uniform so the strength of the electric field is constant throughout the entire plane traveling from the positive to the negative plate.
What direction does the electric field lines travel in?
From the positive to the negative end.
When is ma equal to qE?
When the only force acting on the object is the electric force.
What is the acceleration in a uniform electric field?
The acceleration is constant.
What happens to a positive charge in relation to its electric potential difference?
When the Difference > 0 the charge slows down.
When the Difference < 0 the charge speeds up.
What happens to a negative charge in relation to its electric potential difference?
When the Difference > 0 the charge speeds up.
When the Difference < 0 the charge slows down.
Where is the electric potential 0V?
A point that is equidistant from both charges.
What happens if a proton has an initial velocity towards the positive plate?
The proton will lose kinetic energy since it is moving opposite to the electric field.
What is electric potential energy (U)?
This is the energy that a particle will require in order to move against an electric field.
