electric fields

electric field

property of space around a charged object that causes forces on other charged objects

description of test charge particle

small and positive

Coulomb’s Law

the closer the test charge, the stronger the force

field can be determined by the effects on the test charge in different _____

locations

Field Intensity letter / field magnitude

E

Field Intensity is ____ to the force on the test charge

proportional

Field Intensity is ______ to the charge itself

inversely proportional

the ratio of field intensity is ______ of the test charge

independent

field intensity direction

positive towards negative

the electrical field in the electrical system is analagous to ____

gravity

is the electric field real?

yes

are electric field lines real?

no

Field Lines

the intensity and direction of the Electrical Field

positive charges point…

out

negative charges point…

in

Parallel Plates

2 parallel sheets of EQUAL quantity and OPPOSITE charges on each plate

the electric field is ____ between parallel plates

uniform

the greater the amount of electric field lines —> ____ the field intensity

greater

SI unit of electric field

N/C or V/m

Electric Field

-the force per unit charge on a charge in the field

-the relative capability of a region to exert on electronic force on a charge in the field

-the direction a small positive charge would move

capacitance

-the ability of a component/circuit to collect and store energy in the form of an electrical charge

-the ratio of an object’s stored charge to its potential difference

capacitor

-energy-storing devices in many sizes and shapes

-consists of 2 plates of conducting material between an insulator made of materials

-when off, it retains the energy it gathered

capacitor SI unit

C/V —> Farad (F)

eelctrical force on the charged oil

Fe

W (milikan)

weight charged of oil drop

when charged oil drop suspended by electrical field equation

Fe=W

electric potential

ratio of electric potential energy to charge (V)

electric “potential difference”

the difference in electric potential between 2 points (volt —> J/C)

uF —>

pf

mC

x10^-6

x10^-12

x10^-3

electric field line

the lines that provide a picture of the SIZE and STRENGTH of the field around a charged object

Van de Gaff generator

decide that accumulates a charge

the charges on a hollow conductor are found on the _____ surface

outer