Module 5 Flashcards
It is the energy that charged particles such as electrons and protons have because of its own electric charge and its relative position to other charged particles.
Electric Potential Energy
It is a scalar quantity equal to the product of the displacement (x) and the component of the force (Fx) in the direction of the displacement.
Work
It is the ability to do work by virtue of position or condition.
Potential Energy | U = mgh
It is the ability to do work by virtue of motion.
Kinetic Energy | K = 1/2mv^2`
It is the work done by a resultant force that is equal to the change in kinetic energy that it produces.
The Work-Energy Theorem | Work = 1/2mvf^2 - 1/2mvi^2
The amount of work done is _______ to the change in potential energy.
equal
The field exerts a __________ force on the positive test charge.
downward (positive = down)
Work done by the field is _________.
positive
If the work done by the field is positive, the force and direction is _________.
downward (positive = down)
If the work done by the field is positive, potential energy ___________.
decreases (positive = decrease)
If the work done by the field is negative, potential energy ___________.
increases (negative = increase)
Potential energy is always defined ___________ to some reference point where U=0.
relative
Work that is done by the electric force when the particle moves from a to b.
W_elec = Ua - Ub = -ΔU
Work that must be done by an external force to move the particle from a to b against the electric force.
W_exter = Ub - Ua = ΔU
Total electric field is the ___________ sum of individual charges.
vector sum
Work done is just the sum of the contribution of individual _________.
charges
Electrical Potential (V) of a point charge is the total _______________ potential energy and the amount of the charge.
electric potential energy
Electric potential formula is:
V = U/q = kq/r
It is defined as the change in potential difference that occurs when 1-coulomb charge experiences a change in electrical potential energy of one joule.
Volt
It is defined as the change in electrical energy a particle undergoes when moving between different points in space.
Electrical Potential Difference || Voltage Change
In batteries, the positive terminal represents ________.
high potential (positive = high)
In batteries, the negative terminal represents ________.
low potential (negative = low)
In batteries, the _________ is the potential difference between the terminals.
voltage
Electric sources supply a _______ potential difference.
constant
This is needed for the charges to flow in a battery.
Potential Difference
The potential difference between two points is _____.
zero
It is a surface which all points are at the same potential.
Equipotential Surface
________ is required to move a charge from one point to another on an equipotential surface.
No work
It is a 3D surface on which electric potential (V) is the same at every point.
Equipotential Surface
If a test charge (q0) is moved from point to point on a equipotential surface, the electric potential energy ____________.
remains constant.
An equipotential surface must be _________ to the electrical field at any point.
perpendicular
