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Basic Unit Electrical Test

Total questions: 60

Worksheet time: 45mins

Name
Class
Date
1.
a)
Motor
b)
Mouse
c)
Ground
d)
Fuse
2.
a)
Battery
b)
Fuse
c)
Diode
d)
Switch (open)
3.
a)
Battery
b)
Fuse
c)
Diode
d)
Switch (open)
4.
a)
Switch (Closed)
b)
Switch (Open)
c)
Bulb
d)
Chassis Ground
5.
a)
Buzzer
b)
Switch (Open)
c)
Diode
d)
Horn
6.
What color represents a hot wire?
a)
White
b)
Green
c)
Red
d)
Bare
7.
This is a measure of electrical pressure
a)
Curcuit
b)
Amps
c)
Volts
d)
Watts
8.
Measure of electrical current flow
a)
Curcuit
b)
Amp
c)
Volt 
d)
Watt
9.
The term that tells us the size (diameter of a wire)
a)
Gauge
b)
Diameter
c)
Gate
d)
Width
10.
Material that electricity can easily flow through
a)
Insulators
b)
Rubber
c)
Conductor
d)
Wood
11.
In a parallel circuit if one light bulb goes OUT; then they ALL go out. TRUE OR FALSE?
a)
TRUE
b)
FALSE
12.
If a circuit is incomplete, or broken, it is a(n) ________ circuit. 
a)
closed
b)
series
c)
bad
d)
open
13.
What is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
14.
A device for opening or closing the flow in a circuit is _______.
a)
an insulator
b)
a battery charger
c)
a switch
15.
A _______________ is  a strip of easily melted metal that is placed in a circuit as a safeguard.
a)
volt
b)
fuse
c)
filament
16.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
17.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
18.
What is the energy source for a circuit?
a)
Light bulb
b)
Battery
c)
Wire
d)
Switch
19.
What is it called when a circuit is complete?
a)
Closed circuit
b)
Light bulb circuit
c)
Open circuit
d)
Series circuit
20.

Name this symbol

a)

amps

b)

Volts DC

c)

Volts AC

d)

Ohms

21.

Name this symbol

a)

Ohms

b)

Amps

c)

Volts

d)

watts

22.

This symbol is a measurement of......

a)

current flow

b)

pressure

c)

resistance

d)

RPM

23.

When measuring resistance the circuit should be on and flowing electricity.

a)

True

b)

False

24.

When measuring voltage drop the circuit should be off and powered down

a)

True

b)

False

25.

When measuring current the meter needs to be put in series with the circuit that is being measured

a)

True

b)

False

26.

What color is the wire that is feeding the loads?

a)

Blue/white

b)

Dark green/Red

c)

Purple/white

d)

black

27.

What size is the load wire?

a)

20ga

b)

18ga

c)

10ga

d)

16ga

28.

If you used a meter set to Volts DC to measure between points A and B what would you be measuring?

a)

Resistance

b)

Source voltage

c)

voltage drop

d)

current flow

29.

If there wan an open at point A what would be the affect on the horn circuit?

a)

Both horns would not work

b)

Left horn would still work

c)

right horn would still work

d)

No affect

30.

If there was a positive short at point B what would happen to the circuit?

a)

It would stop working completely

b)

Only one horn would blow

c)

horn would blow continuosly

d)

no affect

31.

If there was a Negative short at point B what would happen to the circuit?

a)

Horn will blow louder

b)

fuse will blow

c)

horn would blow continuosly

d)

no affect

32.

Could you measure current flow by connecting meter between points A and B?

a)

Yes

b)

No

33.
A material that does NOT allow electricity to flow is called _____.
a)
a conductor
b)
a fuse
c)
an insulator
d)
a transformer
34.
insulators
a)
power source
b)
turns energy on and off
c)
let electricity flow through easily
d)
stop electricity from flowing through easily
35.
What is the unit of electric current?
a)
Amp
b)
Ohm
c)
Volt
d)
Watt
36.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
37.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
38.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
39.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
40.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
41.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
d)
light
42.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
43.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
44.
Current times Resistance equals
 (I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
45.

Voltage divided by Resistance

(V / R)

a)

Current

b)

Power

c)

Ohms

d)

Watts

46.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
47.
If the Voltage stays the same and Resistance is increased, Current will 
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
48.
How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor
a)
12 volts
b)
24 volts
c)
1.3333
d)
48 volts
49.
This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?
a)
3 Amps
b)
192 Amps
c)
2 Amps
d)
4 Amps
50.
What word means how hard it is for electrons to flow through.
a)
Current
b)
Voltage
c)
Resistance
d)
Power
51.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
d)
It depends
52.
How many Volts would it take to push 1 Amp through a resistance of 1 Ohm
a)
10 volts
b)
1 volt
c)
48 volts
d)
5 volts
53.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
54.
What would the circuit resistance be if a 7.5 Amp draw was present with the engine running and the charging system producing 15 Volts
a)
15 Ohms
b)
4 Ohms
c)
0.3333 Ohms
d)
2 Ohms
55.

What is the formula for ohms law?

a)

1+2=3

b)

R X E = I

c)

E =I x R

d)

E= MC squared

56.

Source terminal of the relay is.........

a)

87

b)

30

c)

85

d)

86

57.

Ground terminal of the relay is.........

a)

87

b)

30

c)

85 or 86

d)

86

58.

Load terminal of the relay is.........

a)

87

b)

30

c)

85 or 86

d)

86

59.

All of the following are true about the circuit in the diagram above EXCEPT.

a)

A. It is a ground switched circuit.

b)

B. It contains two relays.

c)

C. The solid dots indicate a junction.

d)

D. It is a positive switched relay circuit.

60.

Electricity will always follow the path of least resistance

a)

True

b)

False

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