Practice the published Technician licence exam questions

These are the exam body’s own published questions, reproduced word for word, with its own answer key. Nothing here was written by us and nothing was taken from a dump — the publisher put them out itself, which is why we can show them at all.

Answers are hidden until you ask for them. Work the question first: reading an answer you did not reach yourself teaches almost nothing, and this page is built so that has to be a choice.

SECTIONS: T1 (68) · T2 (37) · T3 (35) · T4 (23) · T5 (50) · T6 (46) · T7 (44) · T8 (47) · T9 (23) · T0 (36)

T5 — 50 of 409 published

T5A01

Electrical current is measured in which of the following units?

  1. A. Volts
  2. B. Watts
  3. C. Ohms
  4. D. Amperes
Show the published answer

D. Amperes

T5A02

Electrical power is measured in which of the following units?

  1. A. Volts
  2. B. Watts
  3. C. Watt-hours
  4. D. Amperes
Show the published answer

B. Watts

T5A03

What is the term for the flow of electrons in an electric circuit?

  1. A. Voltage
  2. B. Amperes per second
  3. C. Volts per second
  4. D. Current
Show the published answer

D. Current

T5A04

What term describes the number of times per second that an alternating current makes a complete cycle?

  1. A. Pulse rate
  2. B. Wave number
  3. C. Frequency
  4. D. Wavelength
Show the published answer

C. Frequency

T5A05

A difference in which of the following causes electron flow?

  1. A. Voltage
  2. B. Ampere-hours
  3. C. Capacitance
  4. D. Inductance
Show the published answer

A. Voltage

T5A06

What is the unit of frequency?

  1. A. Hertz
  2. B. Henry
  3. C. Farad
  4. D. Epicycles per second
Show the published answer

A. Hertz

T5A07

Why are metals generally good conductors of electricity?

  1. A. They have relatively high density
  2. B. They have many free electrons
  3. C. They have many free protons
  4. D. They have relatively high Young’s modulus values
Show the published answer

B. They have many free electrons

T5A08

Which of the following is a good electrical insulator?

  1. A. Sea water
  2. B. Glass
  3. C. Stainless steel
  4. D. Graphite
Show the published answer

B. Glass

T5A09

Which of the following describes alternating current?

  1. A. Current that alternates between a positive direction and zero
  2. B. Current that alternates between a negative direction and zero
  3. C. Current that alternates between positive and negative directions
  4. D. All these answers are correct
Show the published answer

C. Current that alternates between positive and negative directions

T5A10

Which term describes the rate at which electrical energy is used?

  1. A. Resistance
  2. B. Current
  3. C. Power
  4. D. Voltage
Show the published answer

C. Power

T5A11

What type of current flow is opposed by resistance?

  1. A. Direct current
  2. B. Alternating current
  3. C. RF current
  4. D. All these choices are correct
Show the published answer

D. All these choices are correct

T5B01

How many milliamperes is 1.5 amperes?

  1. A. 0.0000015 milliamperes
  2. B. 0.0015 milliamperes
  3. C. 1500 milliamperes
  4. D. 1,500,000 milliamperes
Show the published answer

C. 1500 milliamperes

T5B02

Which is equal to 1,500,000 hertz?

  1. A. 1500 kHz
  2. B. 1500 MHz
  3. C. 15 GHz
  4. D. 150 kHz
Show the published answer

A. 1500 kHz

T5B03

Which is equal to one kilovolt?

  1. A. One one-thousandth of a volt
  2. B. One hundred volts
  3. C. One thousand volts
  4. D. One million volts
Show the published answer

C. One thousand volts

T5B04

Which is equal to one microvolt?

  1. A. One one-millionth of a volt
  2. B. One million volts
  3. C. One thousand kilovolts
  4. D. One one-thousandth of a volt
Show the published answer

A. One one-millionth of a volt

T5B05

Which is equal to 500 milliwatts?

  1. A. 5 watts
  2. B. 0.5 watts
  3. C. 500,000 watts
  4. D. 500,000,000 watts
Show the published answer

B. 0.5 watts

T5B06

Which is equal to 3000 milliamperes?

  1. A. 0.003 amperes
  2. B. 0.3 amperes
  3. C. 3,000,000 amperes
  4. D. 3 amperes
Show the published answer

D. 3 amperes

T5B07

Which is equal to 3.525 MHz?

  1. A. 0.003525 kHz
  2. B. 35.25 kHz
  3. C. 3525 kHz
  4. D. 3,525,000 kHz
Show the published answer

C. 3525 kHz

T5B08

Which is equal to 1,000,000 picofarads?

  1. A. 0.001 microfarads
  2. B. 1 microfarad
  3. C. 1000 microfarads
  4. D. 1,000,000,000 microfarads
Show the published answer

B. 1 microfarad

T5B09

Which decibel value most closely represents a power increase from 5 watts to 10 watts?

  1. A. 2 dB
  2. B. 3 dB
  3. C. 5 dB
  4. D. 10 dB
Show the published answer

B. 3 dB

T5B10

Which decibel value most closely represents a power decrease from 12 watts to 3 watts?

  1. A. -1 dB
  2. B. -3 dB
  3. C. -6 dB
  4. D. -9 dB
Show the published answer

C. -6 dB

T5B11

Which decibel value represents a power increase from 20 watts to 200 watts?

  1. A. 10 dB
  2. B. 12 dB
  3. C. 18 dB
  4. D. 28 dB
Show the published answer

A. 10 dB

T5B12

Which is equal to 28400 kHz?

  1. A. 28.400 kHz
  2. B. 2.800 MHz
  3. C. 284.00 MHz
  4. D. 28.400 MHz
Show the published answer

D. 28.400 MHz

T5B13

Which is equal to 2425 MHz?

  1. A. 0.002425 GHz
  2. B. 24.25 GHz
  3. C. 2.425 GHz
  4. D. 242.5 GHz
Show the published answer

C. 2.425 GHz

T5C01

What describes the ability to store energy in an electric field?

  1. A. Inductance
  2. B. Resistance
  3. C. Frequency
  4. D. Capacitance
Show the published answer

D. Capacitance

T5C02

What is the unit of capacitance?

  1. A. Farad
  2. B. Ohm
  3. C. Volt
  4. D. Henry
Show the published answer

A. Farad

T5C03

What describes the ability to store energy in a magnetic field?

  1. A. Admittance
  2. B. Capacitance
  3. C. Resistance
  4. D. Inductance
Show the published answer

D. Inductance

T5C04

What is the unit of inductance?

  1. A. Coulomb
  2. B. Farad
  3. C. Henry
  4. D. Ohm
Show the published answer

C. Henry

T5C05

What is the unit of impedance?

  1. A. Volt
  2. B. Ampere
  3. C. Coulomb
  4. D. Ohm
Show the published answer

D. Ohm

T5C06

What is the abbreviation for kilohertz?

  1. A. kHz
  2. B. khz
  3. C. KHz
  4. D. KHZ
Show the published answer

A. kHz

T5C07

What is the abbreviation for megahertz?

  1. A. mHz
  2. B. mHZ
  3. C. Mhz
  4. D. MHz
Show the published answer

D. MHz

T5C08

What formula is used to calculate electrical power (P) in a DC circuit?

  1. A. P = I x E
  2. B. P = E / I
  3. C. P = I2 x E
  4. D. P = I / E
Show the published answer

A. P = I x E

T5C09

How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

  1. A. 138 watts
  2. B. 0.7 watts
  3. C. 23.8 watts
  4. D. 3.8 watts
Show the published answer

A. 138 watts

T5C10

How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes?

  1. A. 4.8 watts
  2. B. 30 watts
  3. C. 14.5 watts
  4. D. 0.208 watts
Show the published answer

B. 30 watts

T5C11

How much current is required to deliver 120 watts at a voltage of 12 volts DC?

  1. A. 0.1 amperes
  2. B. 10 amperes
  3. C. 12 amperes
  4. D. 132 amperes
Show the published answer

B. 10 amperes

T5C12

What is impedance?

  1. A. The opposition to AC current flow
  2. B. The inverse of resistance
  3. C. The inverse of reactance
  4. D. The power handling capability of a component
Show the published answer

A. The opposition to AC current flow

T5D01

What formula is used to calculate current in a circuit?

  1. A. I = E x R
  2. B. I = E / R
  3. C. I = E2 x R
  4. D. I = E2 / R
Show the published answer

B. I = E / R

T5D02

What formula is used to calculate voltage in a circuit?

  1. A. E = I x R
  2. B. E = I / R
  3. C. E = I2 x R
  4. D. E = I2 / R
Show the published answer

A. E = I x R

T5D03

What formula is used to calculate resistance in a circuit?

  1. A. R = E x I
  2. B. R = E / I
  3. C. R = E + I
  4. D. R = E - I
Show the published answer

B. R = E / I

T5D04

What is the resistance of a circuit in which a current of 3 amperes flows when connected to 90 volts?

  1. A. 3 ohms
  2. B. 30 ohms
  3. C. 1/30 ohm
  4. D. 270 ohms
Show the published answer

B. 30 ohms

T5D05

What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

  1. A. 18 ohms
  2. B. 0.125 ohms
  3. C. 8 ohms
  4. D. 13.5 ohms
Show the published answer

C. 8 ohms

T5D06

What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

  1. A. 3 ohms
  2. B. 16 ohms
  3. C. 48 ohms
  4. D. 8 ohms
Show the published answer

A. 3 ohms

T5D07

What is the current in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?

  1. A. 9600 amperes
  2. B. 200 amperes
  3. C. 0.667 amperes
  4. D. 1.5 amperes
Show the published answer

D. 1.5 amperes

T5D08

What is the current through a 100-ohm resistor connected across 200 volts?

  1. A. 20,000 amperes
  2. B. 0.5 amperes
  3. C. 2 amperes
  4. D. 100 amperes
Show the published answer

C. 2 amperes

T5D09

What is the current through a 24-ohm resistor connected across 240 volts?

  1. A. 2400 amperes
  2. B. 0.1 amperes
  3. C. 10 amperes
  4. D. 5760 amperes
Show the published answer

C. 10 amperes

T5D10

What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?

  1. A. 1 volt
  2. B. 0.25 volts
  3. C. 2.5 volts
  4. D. 1.5 volts
Show the published answer

A. 1 volt

T5D11

What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?

  1. A. 1 volt
  2. B. 10 volts
  3. C. 11 volts
  4. D. 9 volts
Show the published answer

B. 10 volts

T5D12

What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

  1. A. 8 volts
  2. B. 0.2 volts
  3. C. 12 volts
  4. D. 20 volts
Show the published answer

D. 20 volts

T5D13

In which type of circuit is the current always the same through all components?

  1. A. Series
  2. B. Parallel
  3. C. Resonant
  4. D. Branch
Show the published answer

A. Series

T5D14

In which type of circuit is the voltage always the same across all components?

  1. A. Series
  2. B. Parallel
  3. C. Resonant
  4. D. Branch
Show the published answer

B. Parallel

Back to the Technician licence exam track · The lessons · The fact library