Q3_Lesson 3 - Electric Field

Lightning

Can be produced between opposite charges within a cloud, between two or more separate clouds or between the cloud and the ground  

Field Forces

forces that act between objects even if they are not in constant

Electrostatic (Coloumbic) Force

Gravitational Force

Field Forces

Electrostatic (Coulombic) Force

calculated using the charges

Gravitational Force

calculated using the mass

higher

higher gravitational forces = ____ mass

Electric Field

Defined as the amount of electric force on a charged body exerted by external charged bodies

Electric Field

Way on how charged communicate to one another

Electric Field

Force per unit charge

test charge

Electric field is always existing proven by a _____

charged particle

produces an electric field around it. Thus, another charged particle reacts to it by experiencing an electric force

charge

produced an electric field in its surroundings, but this electric field cannot exert a net force on the charge that created it

Test charge

will react to it by experiencing electric force

vector quantity

Since electric force is a vector quantity, it can already be deduced that electric field is also a____

E= Fe / q0 = k|q0| / r²

Electric Field Formula

Inverse-square Law

still applicable to the electric field equation

directed away

For a positive charge, the field lines should be ____ from the charge

field lines

line around the charge

directed towards

For a negative charge, the field lines will be _____ it

Case 1: Attractive (positive charge and negative charge)

Case 2: Repulsive (positive charges)

Case 3: Repulsive (negative charged)

Drawing Electric Field Lines

Field lines emanate from the positive charge and terminate to the negative charges

Field lines do not intersect at one point. Field lines only meet if the force between the charges is attractive

The density of the lines (number of lines per space), represents the strength of the field

Three Basic Rules in Drawing Electric Field Lines

emanate, terminate

Field lines _____ from the positive charge and _____ to the negative charges

Attractive

Field lines do not intersect at one point. Field lines only meet if the force between the charges is____  

strength

The density of the lines represents the ____of the field  

density of the lines

number of lines per space

Higher charge = more field lines = stronger field

concept of charge and field line

weaker

More spaces in field lines = ____ electric field

uniform

Same spaces = ____ electric field

E= Fe / q0

this equation reflects the relationship between electric force and electric field

E= k|q0| / r²

This equation shows how to calculate the electric field when the charge of the particle that sets up the field and the distance of the point charge are given