Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PHYSICS F5 > CH3 > Flashcards

CH3 Flashcards

1
Q

Definition of electric field

A

Region around a charged particle where any electrical charges in the region will experience electric force

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

Definition of Electric field strength, E

A

Electric force acting on one unit positive charge placed at the point

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

Definition of current

A

rate of flow of charge in a conductor

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

Definition of potential difference, V

A

Work done in moving one coulomb of charge from one point to another

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

Ohm’s Law

A

Electric current flowing through a conductor is directly proportional to the potential difference across it if temperature and other physical conditions are constant

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

Definition of ohmic conductor

A

Conductors that obey ohm’s law

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

Relationship of Voltage and Electric current of Ohmic conductor

A

Directly proportional

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

Relationship of Voltage and Electric current of non-ohmic conductor

A

Increase with

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

Characteristics of series circuit

A

Single path, same current, different potential difference

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

Characteristics of parallel circuit

A

multiple path, different current, same potential difference

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

3 Factors that affect resistance of wire & the relationship

A

length of wire, directly proportional
cross-sectional area of wire, decreases
resistivity of conductor, directly proportional

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

Definition of resistivity of a conductor

A

Measure of conductor ability to oppose the flow of electric current

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

2 Factor affecting resistivity of a conductor

A

Temperature
Nature of conductor material

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

Definition and Resistivity of Non-Conductor

A

Material that does not conduct electricity, good insulator, highest resistivity

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

Definition and Resistivity of Semiconductor

A

Material that conduct electricity better than an insulator but not as good as conductor, resistivity between non conductor and conductor

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

Definition and Resistivity of Conductor

A

Material that conduct electricity, low resistivity

17
Q

Definition and Resistivity of Superconductor

A

Material that conducts electricity without any resistance, 0 resistivity at critical temperature

18
Q

Definition of critical temperature ( of a superconductor)

A

The temperature when resisitivity of a superconductor is zero

19
Q

Definition of Electromotive force, e.m.f

A

Energy transferred or work done by an electrical source to move one coulomb of charge in a complete circuit

20
Q

Definition of Internal resistance

A

Resistance caused by electrolyte in the dry cell

21
Q

2 Effects of Internal resistance

A

Loss of energy
Potential difference < e.m.f when current flows in complete circuit

PHYSICS F5 (1 decks)

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