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WorksheetsElectronics S1 U1 Review
Total questions: 39
Worksheet time: 20mins
Name
Class
Date
1.
What is the color for the numerical value of 2 on a resistor?
a)
brown
b)
black
c)
orange
d)
red
2.
Current is measured in:
a)
volts
b)
amps
c)
ohms
d)
watts
3.
Resistance is measured in:
a)
volts
b)
amps
c)
ohms
d)
watts
4.
Voltage is measured in:
a)
volts
b)
amps
c)
ohms
d)
watts
5.
Power is measured in:
a)
volts
b)
amps
c)
ohms
d)
watts
6.
What are the color codes for a 210 ohm resistor?
a)
brown, grey, red
b)
brown, black, yellow
c)
red, brown, brown
d)
brown, black, brown
7.
What are the color codes for a 470k ohm resistor?
a)
Yellow, Violet, Yellow
b)
Orange, Grey, Orange
c)
Yellow, Violet, Orange
d)
Orange, Grey, Yellow
8.
What is the resistance for a Red, Brown, Black resistor?
a)
21 Ohms
b)
210 Ohms
c)
12 Ohms
d)
120 Ohms
9.
What is the resistance for a Brown, Red, Black resistor?
a)
21 Ohms
b)
210 Ohms
c)
12 Ohms
d)
120 Ohms
10.
What is the color code for a Orange, Black, Red resistor?
a)
3k Ohms
b)
200 Ohms
c)
300 Ohms
d)
2K Ohms
11.
Which resistor will prevent the most current flow?
a)
1 ohm
b)
100 ohms
c)
1000 ohms
d)
0.5k ohms
12.
What is the purpose of a resistor?
a)
control current flow
b)
allow current flow
c)
prevent current flow
d)
allow heat to build up
13.
How does resistance affect current?
a)
less resistance - less current
b)
more resistance - less current
c)
more resistance - more current
d)
resistance does not affect current
14.
How is the value of resistance marked on a power resistor?
a)
printed
b)
color bands
c)
number/letter code
d)
military specification code
15.
How is the value of resistance marked on a precision resistor?
a)
printed
b)
color bands
c)
number/letter code
d)
military specification code
16.
What are power resistors used for?
a)
As general purpose resistors
b)
To obtain an exact value of resistance
c)
Vary a circuit's power rating
d)
Control large amounts of current
17.
What is the shape of a carbon film resistor?
a)
cylindrical
b)
round
c)
square
d)
bone
18.
What are rheostats used for?
a)
Control large amounts of heat
b)
Vary large amounts of current
c)
Control of a circuit's power rating
d)
Vary a circuit's tolerance
19.
What is the ohmic value and tolerance for a brown, black, red, no color resistor?
a)
1k 5%
b)
10k 5%
c)
1k 20%
d)
1k 10%
20.
Convert 27,000 to powers of ten.
a)
.27 x 10 5
b)
27 x 10 3
c)
2.7 x 10 4
d)
27 x 10 4
21.
Another name for voltage is...
a)
temperature coefficient
b)
potential difference
c)
power
d)
current flow
22.
What is the ohmic value and tolerance for a red, red, red, gold resistor?
a)
22 ohms 10%
b)
2.2k ohms 10%
c)
220 ohm 5%
d)
2.2k ohms 5%
23.
What is the ohmic value and tolerance for a red, red, black, gold resistor?
a)
22 ohms 5%
b)
2.2k ohms 10%
c)
220 ohm 5%
d)
220 ohm 10%
24.
Safety colors allow you to do this.
a)
color coordinate your signs
b)
draw attention to signs
c)
distinguish safety hazards
d)
show high voltage
25.
What is the unit for potential difference?
a)
ohms
b)
amperes
c)
volts
d)
watts
26.
What are the color codes for a 100 ohm resistor?
a)
brown, grey, red
b)
brown, black, yellow
c)
orange, brown, brown
d)
brown, black, brown
27.
What are the color codes for a 1000 ohm resistor?
a)
brown, grey, red
b)
brown, black, red
c)
orange, brown, brown
d)
brown, black, brown
28.
What are the color codes for a 310 ohm resistor?
a)
brown, grey, red
b)
brown, black, red
c)
orange, brown, brown
d)
brown, black, brown
29.
What are the color codes for a 1800 ohm resistor?
a)
brown, grey, red
b)
brown, black, red
c)
orange, brown, brown
d)
brown, black, brown
30.
What is the letter designation for Resistance?
a)
P
b)
R
c)
I
d)
E
31.
What is the letter designation for Current?
a)
P
b)
R
c)
I
d)
E
32.
What is the letter designation for Voltage?
a)
P
b)
R
c)
I
d)
E
33.
What is the tolerance for a Red, Brown, Brown, Silver resistor?
a)
1%
b)
20%
c)
5%
d)
10%
34.
What is the tolerance for a Green, Red, Black, Gold resistor?
a)
1%
b)
20%
c)
5%
d)
10%
35.
What are fixed power resistors made from most often?
a)
silver filament
b)
carbon film
c)
metal film
d)
wire wound
36.
Resistors can be found in __________ types of electronic equipment
a)
all
b)
a few
c)
no
d)
most
37.
Which of these is a very good insulator?
a)
water
b)
silver
c)
wood
d)
rubber
38.
A conductor____________________________
a)
will not conduct current
b)
resists current flow
c)
provides a path for current flow
d)
provides no path for current flow
39.
Which of these is NOT a requirement for a simple circuit?
a)
Voltage
b)
Load
c)
Conductor
d)
Light
Reset
