This document contains a quiz on electrical concepts with multiple choice, true/false, and problem solving questions. Some key points: 1. The multiple choice questions cover topics like current, voltage, conductors, insulators, resistance and their definitions. 2. The true/false questions test understanding of concepts like Ohm's law, the relationship between resistance and current, alternating current, and safety aspects of electricity. 3. The problem solving questions ask the test taker to calculate current, resistance, and voltage given two of the three variables based on Ohm's law.

1. NAME:__________________________________ SECTION:__________________DATE:______________
I. MULTIPLE CHOICE write the letterof the correctanswer.
1.Describedasstreamof movingelectrons
a)voltage b)current
c)resistance d)impluses
2.What kindof conductor isthat whenelectricpotential isabsent,itcontainsfree flowingelectronsbutnoelectric
current.
a)exposedconductor
b)isolatedconductor
c)intermittentconductor
d)none of the above
3.The graphof alternatingcurrentversustime is;
a)straight b)slant
c)sinosoid d)decreasing
4.What are materialsthatofferverylittle resistancewhere electronscanmove easily?
a. conductors
b. insulators
c. both a and b
d. none of the above
5.What are materialsthatpresenthighresistance andrestrictthe flow of electrons?
a. conductors
b. insulators
c. both a and b
d. none of the above
6.The followingare examplesof aconductorexcept:
a. paper
b. glass
c. plastic
d. all of the above
7. The lesserthe amountof charge the _____physical separation
a. Greater
b. Lesser
c. Same
d. Dependsonthe situation.
8. Which of the followingdoesnotrepresentvoltage.
a. V
b. E
c. Emf
d. None of the above
9. He discovered contactof electricityresultingfromcontactof metals
a. Andre Marie ampere
b. AlessandroVolta
c. Georg Ohm
10. 1 voltisequivalentto
a. 1coulombpersecond
b. 1 joule percoulomb
c. 1 joule persecond
d. 1 coulombperjoule
II.TRUE OR FALSE
1.AustralianphysicistGeorgOhmdeterminedthatthere isa directproportionalitybetweenthe voltageappliedandthe
electriccurrent.
2.All materialsresistcurrentflowtosome degree.
3.Resistance canbe usedbeneficially.
4.If the resistance inacircuit increases,the currentalsoincreases.

2. 5.Resistance andcurrenthas an inverselyproportional relationship.
6.Alternatingcurrentiswhenthe flowof electriccharge constantlyreversesdirection
7.Andre marie ampere isa Frenchpsychiatristandmathematician
8.0.0001 current inamps can be felt.
9.With 0.015 amps,the affectonpersonisdisfunctionof muscle.
10.Current isequal tovoltage timesresistance
11. Currentgetsdistributedovercomponentsconnectedinparallel.
12.Volatagesare the same throughall componentsconnectedinparallel.
13.Voltage,alsocalledelectromotive force,isthe potentialdifference incharge betweentwopointsinanelectricalfield.
In otherwords,voltage isthe "joule perunitcharge”.
14. Directcurrent circuitiscommonlyusedinbattery-poweredportableequipment.
15.DC voltage ismore commonthanAC current.
Identification
1.It opposesthe pushfromthe voltage source.
2.The symbol forresistance.
3.The unitforresistance.
4.The formulaforresistance.
5.The mostcommonlyusedmethodof electrictransmissiontoday.
6.The relationshipbetweenresistance andcurrent.
7.The unitof ampere isequal tohow manycoulombpersecond?
8.The letterErepresentsvoltage whatdoesthe Emeans?
9. It providedbyan energysource suchas a battery,iswhat causescurrentto flow.
10. Directionof voltage inbatteries.
PROBLEMSOLVING.(5pts.Each)
1.Findthe current I througha resistorof resistance R= 8Ω if the voltage acrossthe resistoris34 V.
2.An electricheaterdraws5.3 A froma 120 V source.The resistance of the heatingelementisapproximately?
3. If 550 µA is flowingthrough8kohms
of resistance,whatisthe voltage dropacrossthe resistor?