Electronics Information
15 Questions
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Questions and Answers
- 1.An "AA" battery produces a potential difference of 1.5 V. Four "AA" batteries are placed in series to power a portable FM radio. What is the total voltage of the radio?
- A.
1.0 V
- B.
1.5 V
- C.
3.5 V
- D.
6.0 V
- 2.Which of the following is NOT needed to produce electrical power from fossil fuels?
- A.
A turbine
- B.
Steam
- C.
Gas
- D.
A dam
- 3.
- A.
100 - 200 degrees F
- B.
200 - 300 degrees F
- C.
300 - 400 degrees F
- D.
500 - 600 degrees F
- 4.
- A.
10 hz
- B.
30 hz
- C.
60 hz
- D.
120 hz
- 5.Most 12 V automobile batteries are made from up to 6 individual cells connected in series. What is the voltage of each cell in an automobile battery?
- A.
1 V
- B.
2 V
- C.
6 V
- D.
10 V
- 6.If you want electrical current to flow in only one direction, what you should always use?
- A.
A transistor
- B.
A transformer
- C.
A resistor
- D.
A diode
- 7.
- A.
550 watts
- B.
144 watts
- C.
1440 watts
- D.
2400 watts
- 8.Copper is used in mots electric wires because it is...
- A.
A good conductor of electricity and inexpensive
- B.
A good resistor that holds power for a long time
- C.
A good semiconductor for modern microchips
- D.
A powerful transformer for increase power voltage
- 9.Which of the following is NOT necessary to form an electric circuit?
- A.
Voltage source
- B.
Closed path
- C.
Resistance
- D.
Metal plug
- 10.A 480-volt circuit has a resistance of 24 ohms. How much current is flowing?
- A.
10 amperes
- B.
20 amperes
- C.
30 amperes
- D.
40 amperes
- 11.
- A.
Transformer
- B.
Insulator
- C.
Resistor
- D.
Voltage
- 12.If a 120 V light bulb is rated at 60 watts, what is the bulb's rated current?
- A.
.5 amps
- B.
1amp
- C.
1.5 amps
- D.
2 amps
- 13.
- A.
10 Hz
- B.
60 Hz
- C.
100 Hz
- D.
220 Hz
- 14.
- A.
Electrons
- B.
Neutrons
- C.
Protons
- D.
Positrons
- 15.
- A.
Aluminum & tin
- B.
Gold & silver
- C.
Gold & bronze
- D.
Tin & lead
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