Radt 142-unit 3 Test questions and answers rated
A+ already passed
1. Electrostatics - study of electric charge in stationary (slow moving) form
2. Electrification - too few or too many electrons
(protons do not move)
3. Methods of 5. Voltage
elec-
trification
4. 4 laws of
electro- statics
1/
17
,Radt 142-unit 3 Test questions and answers rated
A+ already passed
Friction: ex: rubbing fur the outside of a conductor (wire)
against a rod or head 3) electric charges are concentrated on the sharpest curvature of a
against a balloon conductor
4) electrostatic force is:
Contac a) directly proportional to the product of
t: a change AKA Coloumbs law: Q1(Q2)/d^2
body b) inversely proportional to the square of the distance
charge
d by *change & force= direct relationship
friction *use inverse square law when change in distance
touche
s
anothe
r
object
ex:
touchi
ng
electri
cal
fence
Induction: rearrangement
of electrons on an
uncharged object in the
presence of a charged
object
ex: electric cars
1) unlike charges attract,
opposites attract
2) electrons travel on
2/
17
, Radt 142-unit 3 Test questions and answers rated
A+ already passed
-potential ditterence in current of electricity at each end of the conductor
-when an object is electrically charged it has potential energy to do work
6. Current - the flow of electricity or electrons
- measured in amperage (A)
7. Conductor & Conductor: allows electrons/electricity to
in- sulator
flow ex: metals, gold, copper, silver, water
Insulator: inhibits the flow of
electrons ex: wood, rubber
8. Semiconductor - works as an insulator in one condition and a conductor in another
ex: silicon
9. Superconductor - allows electrons to flow without
resistance ex: titanium
10. Circuit - a path for an electrical current to flow around
Components of a circuit:
1) current (I)- measured in
amperes (A) amperes= # of electrons
flowing in a circuit
2) potential ditterence- volts (v)
3) Resistances (R)- measured in ohms
11. Resistance - anything that opposes or hinders the flow of electrons
Resistance is influenced by:
-length of the wire (conductor)
3/
17
A+ already passed
1. Electrostatics - study of electric charge in stationary (slow moving) form
2. Electrification - too few or too many electrons
(protons do not move)
3. Methods of 5. Voltage
elec-
trification
4. 4 laws of
electro- statics
1/
17
,Radt 142-unit 3 Test questions and answers rated
A+ already passed
Friction: ex: rubbing fur the outside of a conductor (wire)
against a rod or head 3) electric charges are concentrated on the sharpest curvature of a
against a balloon conductor
4) electrostatic force is:
Contac a) directly proportional to the product of
t: a change AKA Coloumbs law: Q1(Q2)/d^2
body b) inversely proportional to the square of the distance
charge
d by *change & force= direct relationship
friction *use inverse square law when change in distance
touche
s
anothe
r
object
ex:
touchi
ng
electri
cal
fence
Induction: rearrangement
of electrons on an
uncharged object in the
presence of a charged
object
ex: electric cars
1) unlike charges attract,
opposites attract
2) electrons travel on
2/
17
, Radt 142-unit 3 Test questions and answers rated
A+ already passed
-potential ditterence in current of electricity at each end of the conductor
-when an object is electrically charged it has potential energy to do work
6. Current - the flow of electricity or electrons
- measured in amperage (A)
7. Conductor & Conductor: allows electrons/electricity to
in- sulator
flow ex: metals, gold, copper, silver, water
Insulator: inhibits the flow of
electrons ex: wood, rubber
8. Semiconductor - works as an insulator in one condition and a conductor in another
ex: silicon
9. Superconductor - allows electrons to flow without
resistance ex: titanium
10. Circuit - a path for an electrical current to flow around
Components of a circuit:
1) current (I)- measured in
amperes (A) amperes= # of electrons
flowing in a circuit
2) potential ditterence- volts (v)
3) Resistances (R)- measured in ohms
11. Resistance - anything that opposes or hinders the flow of electrons
Resistance is influenced by:
-length of the wire (conductor)
3/
17
