All Flashcards
In a diagram of electric field lines and equipotential lines, what do the blue lines represent?
Electric field lines, which indicate the direction of the force on a positive charge.
In a diagram of electric field lines and equipotential lines, what do the red lines represent?
Equipotential lines, which connect points with the same electric potential.
What is the relationship between electric field lines and equipotential lines?
Electric field lines are always perpendicular to equipotential lines.
How does the density of electric field lines relate to the strength of the electric field?
The closer the field lines, the stronger the electric field.
How does the spacing of equipotential lines relate to the strength of the electric field?
The closer the equipotential lines, the stronger the electric field.
How do you calculate the change in electric potential energy?
Use the formula: , where is the change in electric potential energy, is the charge, and is the electric potential difference.
What happens to kinetic energy when electric potential energy increases?
Kinetic energy decreases by the same amount, conserving total energy.
What happens to kinetic energy when electric potential energy decreases?
Kinetic energy increases by the same amount, conserving total energy.
Describe the process of an electron accelerating in an electric field.
As the electron moves from a region of low potential to high potential, it loses electric potential energy, which is converted into kinetic energy, causing it to accelerate.
Describe the process of a proton slowing down in an electric field.
As the proton moves from a region of high potential to low potential, it gains electric potential energy, which is converted from kinetic energy, causing it to decelerate.
What is the effect of a charged particle moving through an electric field?
Its electric potential energy changes, and consequently, its kinetic energy also changes to conserve total energy.
What happens if a positive charge moves to a region of lower electric potential?
Its electric potential energy decreases, and its kinetic energy increases.
What happens if a negative charge moves to a region of higher electric potential?
Its electric potential energy decreases, and its kinetic energy increases.
What is the effect of increasing the potential difference through which an electron is accelerated?
The electron gains more kinetic energy and reaches a higher final speed.
What is the effect of increasing the charge of a particle moving through a given potential difference?
The change in electric potential energy is greater, leading to a larger change in kinetic energy.