Electric Fields

Coulombs Law

Law the closer the test charge the stronger the force

volt

J/C

electric potential diffrence

the work done moving a positive test charge between two points in an electric field divided by the magnitude of the test charge

capacitor

a device with a specific capacitance that is used in electrical circuits to store energy

capacitance

the ratio of an object’s stored charge to its potential difference, measured in farads

electric field

the vector quantity that relates the force exerted on a charge to the size of the charge

electric field line

the lines that provide a picture of the zie and strength of the field around a charged object

equipotential

the potential difference of zero between two or more positions in an electric field

Van de Graaff generator

A ____ is a device that accumulates a charge

per unit charge

an electric field is equal to force _____

closer together

as an electric field becomes stronger, the field lines should be drawn ______

directly proportional to

the force on a test charge in an electric field is ______ the magnitude of the field

both the magnitude of the field and size of the charge

the strength of the force on a charge in an electric field depends on _____

forces

an electrical field produces___ on other charged objects

positive, towards

Electric field lines are directly away from____ charges and ____ nergative charges

cross; stronger

Electric field lines never______, and the closer they are, the _____ the electric field

volt

Electric potential difference is measured in_____

grounding

_______ makes the potential difference between an object and Earth equal to zero.

conductors

Electric fields are strongest near sharply pointed _____

capacaitors

______are used to store charge.

field

The electric ________ concept is used to describe the behavior of one charged object when near another charged object.

lines

Electric field ________ are drawn to show the path that would be followed by a positive test charge placed in the field.

positive

The direction of the force on the test charge near a ________ charge is away from the charge.

work

The difference in potential between any two points in a field is the ________ required to move a unit of whatever is affected by the field between the two points.

uniform

The electric field between two charged parallel plates is ________ except near the edges.

negative

When electrons are forced away from a(n) ________ plate, work is done.

N/C or newtons per coulomb

________ is a unit of electric field intensity.

volt

In electrical terminology, one joule per coulomb is one ________.

Millikan

An American physicist, ________, first measured the charge on an electron.

-1.6 × 10⁻¹⁹ C

The charge on an electron is ________ coulombs

electrons

An object can only have a charge that is an integral multiple of the charge on the ________.

lower

If two charged spheres are touched together, electrons will move to the sphere with the ________ potential.

grounded

________ occurs when an object feeds all of its charge to the earth and becomes neutral.

high

Any pointed or angular surface of an object must have a(n) ________ concentration of charge to establish equilibrium.

capacitors

________ are used in electric circuits to store charge.

farad

Capacitance is measured in ________.

b. meters

Potential difference is calculated by multiplying field intensity units by _____

N/C

What is the unit of electric field intensity?

c. Vq

The work done on an electric charge equals____

a. C/V

One farad is equal to_____

d. 10⁻¹² F

One picofarad (pF) is equal to _____

positive

The direction of an electric field is the direction that a ________ test charge will move when placed in the field.

b. force per unit charge

An electric field is equal to____

the direction and magnitude of the field

The strength of the force on a charge in an electric field depends on____

field lines are only a model of an electric field

The difference between an electric field and field lines is that ______

d. electric potential difference

The work done moving a test charge from one point to another is____

a. on the outer surface

The charges on a hollow conductor are found _______