Electricity

Question 1

charges move from areas of high potential to

Answer 1

areas of low potential

Question 2

coloumbs law for charge

Answer 2

F=K(q1q2/r^2) K=9x10^9 Nm^2/C^2

Question 3

smallest charge is

Answer 3

1.6 x10^19C

Question 4

Electric field equation of a point charge

Answer 4

E=k (q/r^2)

Question 5

Force on an electric field

Answer 5

F=qE

Question 6

Potential energy of a charge in an electric field is

Answer 6

U=qED

Question 7

dipole moment is opposite of the

Answer 7

electric field

Question 8

small distance between lines indicates

Answer 8

large force

Question 9

large distance between field lines indicates

Answer 9

small force

Question 10

field lines pointed away indicates

Answer 10

positive charge

Question 11

field lines pointed toward indicates

Answer 11

negative charge

Question 12

volt units

Answer 12

J/C

Question 13

charges move from

Answer 13

areas of higher potential to areas of lower potential

Question 14

when a charge is moving along an object what is happening

Answer 14

the charge is conducting electricity while the object is resisting it to a certain extent

Question 15

poor conductor are what and do what

Answer 15

good resistors and hold electrons tightly in place

Question 16

moving charge is also called

Answer 16

current

Question 17

units of current

Answer 17

Amps C/S

Question 18

current is described as the movement of

Answer 18

positive charges

Question 19

charges will only flow in the presence of a

Answer 19

potential difference

Question 20

what does a battery provide

Answer 20

the potential difference needed to maintain charge flow

Question 21

resistivity

Answer 21

the quantitative measure of substances resisting the flow of charge

Question 22

Resistance

Answer 22

is the quantitative measure of an object of a particular shape and size to resist the flow of charge

Question 23

Resistance is measured in

Answer 23

Ohms

Question 24

Resistance equation

Answer 24

rho (L/A)

Question 25

voltage is a measure of

Answer 25

potential difference

Question 26

electronmotive force is another word for

Answer 26

voltage

Question 27

real batteries have

Answer 27

internal resistance

Question 28

no current will flow unless

Answer 28

there is a full circle

Question 29

thick conductors help to

Answer 29

move more electricity through

Question 30

a batteries maximum potential energy can be calculated through the use of

Answer 30

delta G=-nFE

Question 31

when a resistor is added some of the energy

Answer 31

dissipates through this

Question 32

when a capacitor is added some of the energy

Answer 32

is stored in it

Question 33

anything attached to a circuit that uses energy

Answer 33

also provides resistance

Question 34

anything that provides resistance

Answer 34

uses energy

Question 35

parallel plate capacitors

Answer 35

two plates made from conductive material are separated by a very small distance. one plate holds positive charge and the other holds the exact same amount of negative charge. creating an electric field

Question 36

Electric field equation for parallel plate capacitors

Answer 36

E=1/dielectric constant (Q/AEknot)

Question 37

capacitance equation

Answer 37

C=Q/V

Question 38

charge sits where on a conductor or capacitor

Answer 38

on top of it

Question 39

Capacitor equation

Answer 39

C=k(AEknot/d)

Question 40

energy stored in any shape capacitor equation

Answer 40

U=1/2QV

Question 41

dielectric constant is a

Answer 41

insulator

Question 42

ammeter

Answer 42

is a tool that measures the current flowing through a circuit. ammeter resistance is nearly zero

Question 43

voltmeter

Answer 43

measures the potential difference

Question 44

multimeter

Answer 44

can serve as both an ammeter and a voltmeter. measure the resistance of the circuit elements

Question 45

electric field inside a capacitor is

Answer 45

constant

Question 46

kirchoffs rule states that current flowing in

Answer 46

must equal current flowing out

Question 47

current across parallel resistors

Answer 47

is additive

Question 48

charge equation

Answer 48

Q=CV

Question 49

magnetic field strength

Answer 49

Tesla

Question 50

Only moving charges create

Answer 50

magnetic fields

Question 51

changing a magnetic field induces an

Answer 51

electric field

Question 52

any current creates a

Answer 52

magnetic field

Question 53

magnetic field equation

Answer 53

F=qvBsintheta

Question 54

in a magnet the field lines go

Answer 54

from north to south

Question 55

a charged particle moving through a magnetic field will be forced

Answer 55

into a curved path

Question 56

magnetic field cannot do

Answer 56

work on an object

Question 57

changing magnetic fields create a

Answer 57

current

Question 58

vmax=

Answer 58

sqrt2*vrms

Question 59

watt units

Answer 59

J/s