Electric Force And Fields Test

Front 1

What is induction?

Back 1

the process of charging a conductor by bringing it near another charged object and grounding the conductor, allowing the electrons to leave

Front 2

What property was discovered in Millikan's experiment? Explain this property.

Back 2

With an oil drop experiment: discovered THAN WHEN AN OBJECT IS CHARGED, ITS CHARGE IS QUANTIZED

Front 3

How are gravitational force and electrical force alike AND different?

Back 3

alike: both exerted w/out contact; thus a field force
different: electric is either attractive or repulsive. Gravitational is only attractive.
-Electrical forces are much stronger than gravitational forces

Front 4

What are the 2 types of electric charge?

Back 4

positive and negative

Front 5

What is a positive ion?

Back 5

cation

Front 6

What is a negative ion?

Back 6

anion

Front 7

What are charged particles called?

Back 7

ions

Front 8

What is an electron's charge?

Back 8

1.6 E -19 C

Front 9

What is an Electron's charge and mass?

Back 9

charge: -1.6 E -19 C
mass: 9.109 E -31 kg

Front 10

What is an Proton's charge and mass?

Back 10

charge: +1.6 E -19 C
mass: 1.673 E -27 kg

Front 11

What is a conductor?

Back 11

a material that charge can travel through easily (think: free electrons)

Front 12

What is an insulator?

Back 12

a material that charge cannot readily travel through

Front 13

What is grounded?

Back 13

when a conductor is placed in contact w/ the earth. When this happens, charge flows freely and is redistributed (cancels out)

Front 14

What is polarization?

Back 14

In the presence of a charged object, the centers of charge for an insulator will shift, resulting in more positive charge on one side of a molecule than on the other

Front 15

Is there a note charge for a polarized object?

Back 15

NO, dude

Front 16

In polarization, can electrons leave?

Back 16

no, dude, seriously?

Front 17

Polarization only works in _________

Back 17

insulators

Front 18

What is sigma Σ

Back 18

sum of all electric forces

Front 19

What is the equilibrium position of a charge?

Back 19

the location at which the net electric force on the charge is zero

Front 20

What's an electric field?

Back 20

a region in a space around a charged object in which a stationary charged object experiences an electric force because of its charge

Front 21

Is E a vector or scalar?

Back 21

VECTOR, dude

Front 22

What are electric field lines?

Back 22

lines that represent both the magnetic & the direction of the electric field

Front 23

On electric field lines, a GREATER # OF LINES MEANS:

Back 23

a stronger electric field

Front 24

What is electric potential?

Back 24

Voltage

Front 25

What is Voltage?

Back 25

electric potential, lolzers

Front 26

What can a capacitor do?

Back 26

-tune frequency of radio receivers -eliminate sparking in car ignition systems
-store electricity in electronic flash units
-capacitors act as a storehouse of charge and energy

Front 27

What is capacitance:

Back 27

the ability of a conductor to store energy in the form of electrically separated charges

Front 28

Capacitance also depends on:

Back 28

size & shape of the capacitor

Front 29

What increases the capacitance of the capacitor?

Back 29

Dialectic