Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

mcat physics > Electricity > Flashcards

Electricity Flashcards

1
Q

charges move from areas of high potential to

A

areas of low potential

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

coloumbs law for charge

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

smallest charge is

A

1.6 x10^19C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Electric field equation of a point charge

A

E=k (q/r^2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Force on an electric field

A

F=qE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Potential energy of a charge in an electric field is

A

U=qED

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

dipole moment is opposite of the

A

electric field

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

small distance between lines indicates

A

large force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

large distance between field lines indicates

A

small force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

field lines pointed away indicates

A

positive charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

field lines pointed toward indicates

A

negative charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

volt units

A

J/C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

charges move from

A

areas of higher potential to areas of lower potential

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

when a charge is moving along an object what is happening

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

poor conductor are what and do what

A

good resistors and hold electrons tightly in place

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

moving charge is also called

A

current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

units of current

A

Amps C/S

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

current is described as the movement of

A

positive charges

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

charges will only flow in the presence of a

A

potential difference

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what does a battery provide

A

the potential difference needed to maintain charge flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

resistivity

A

the quantitative measure of substances resisting the flow of charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Resistance

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Resistance is measured in

A

Ohms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Resistance equation

25
Q

voltage is a measure of

A

potential difference

26
Q

electronmotive force is another word for

27
Q

real batteries have

A

internal resistance

28
Q

no current will flow unless

A

there is a full circle

29
Q

thick conductors help to

A

move more electricity through

30
Q

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

A

delta G=-nFE

31
Q

when a resistor is added some of the energy

A

dissipates through this

32
Q

when a capacitor is added some of the energy

A

is stored in it

33
Q

anything attached to a circuit that uses energy

A

also provides resistance

34
Q

anything that provides resistance

A

uses energy

35
Q

parallel plate capacitors

A

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

36
Q

Electric field equation for parallel plate capacitors

A

E=1/dielectric constant (Q/AEknot)

37
Q

capacitance equation

38
Q

charge sits where on a conductor or capacitor

A

on top of it

39
Q

Capacitor equation

A

C=k(AEknot/d)

40
Q

energy stored in any shape capacitor equation

41
Q

dielectric constant is a

42
Q

ammeter

A

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

43
Q

voltmeter

A

measures the potential difference

44
Q

multimeter

A

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

45
Q

electric field inside a capacitor is

46
Q

kirchoffs rule states that current flowing in

A

must equal current flowing out

47
Q

current across parallel resistors

A

is additive

48
Q

charge equation

49
Q

magnetic field strength

50
Q

Only moving charges create

A

magnetic fields

51
Q

changing a magnetic field induces an

A

electric field

52
Q

any current creates a

A

magnetic field

53
Q

magnetic field equation

A

F=qvBsintheta

54
Q

in a magnet the field lines go

A

from north to south

55
Q

a charged particle moving through a magnetic field will be forced

A

into a curved path

56
Q

magnetic field cannot do

A

work on an object

57
Q

changing magnetic fields create a

58
Q

vmax=

A

sqrt2*vrms

59
Q

watt units

mcat physics (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions