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
