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Ch 33 Physics EA

Chapter 33

electric field a force field that fills the space around every electric charge or group of charges.
field lines vectors that describe the electrified web of space that will draw and repel other charges which it enters.
electrical potential energy energy a charge has due to its location in an electric field;
electric potential electric potential energy per coulomb at a location in an electric field; measured by volts and often called voltage
volt si unit of electric potential one volt is the electrical potential difference across which one coulomb of charge gains or loses one joule of energy
voltage electric potential; measure in volts. and potential difference.
potential difference the difference in electric potential between two points. free charges flow.
electric current the flow of electric charge, measured in amperes.
voltage source a device, such as a battery or generator, that provides a potential difference
electric resistance the resistance of a material to the flow electric current through without resistance
direct current electric current whose flow of charge is in one direction
alternating current electric current that repeatedly reverses direction, twice each cycle, 60 cycles per second.
a force field that surrounds an electric charge or group of charges electric field
an electric field has both magnitude and direction
the concept of electrical potential energy per charge that has a special same electric potential
the SI unit of measurement for electrical potential volt
the name for electric potential measured in volts voltage
the energy a charge has due to its location is an electric filed electrical potential energy
this happens when there is a difference between the conductors which prevents charge flow Potential Difference
the flow of electric charge electric current
work is done when a force moves something in the direction of the force
there is no way to shield___ because it only attracts gravity
how can you shield an electric field? surround the object with a conducting surface
a volt is equal to is equal to one joule/coulomb
weaker test charge means smaller field
an electric field has both magnitude and direction
gravitational field a force field that surrounds a mass
acting at a distance the contact between objects in an electric and gravitational field
positive test charge the direction of an electric field at any point is the direction of this
vector quantity has magnitude and direction, represented by vectors
vectors lines with arrows to show strength and direction of the field lines
Created by: 544