T3B - Electromagnetic wave properties: wavelength vs frequency, nature and velocity of electromagnetic waves, relationship of wavelength and frequency; Electromagnetic spectrum definitions: UHF, VHF, HF 

- [[T3B01]] (D)
What is the relationship between the electric and magnetic fields of an electromagnetic wave? #card
	- A. They travel at different speeds
	- B. They are in parallel
	- C. They revolve in opposite directions 
	- D. They are at right angles

- [[T3B02]] (A)
What property of a radio wave defines its polarization? #card
	- A. The orientation of the electric field
	- B. The orientation of the magnetic field
	- C. The ratio of the energy in the magnetic field to the energy in the electric field
	- D. The ratio of the velocity to the wavelength

- [[T3B03]] (C)
What are the two components of a radio wave? #card
	- A. Impedance and reactance
	- B. Voltage and current
	- C. Electric and magnetic fields
	- D. Ionizing and non-ionizing radiation

- [[T3B04]] (A)
What is the velocity of a radio wave traveling through free space? #card
	- A. Speed of light
	- B. Speed of sound
	- C. Speed inversely proportional to its wavelength
	- D. Speed that increases as the frequency increases

- [[T3B05]] (B)
What is the relationship between wavelength and frequency? #card
	- A. Wavelength gets longer as frequency increases
	- B. Wavelength gets shorter as frequency increases
	- C. Wavelength and frequency are unrelated
	- D. Wavelength and frequency increase as path length increases

- [[T3B06]] (D)
What is the formula for converting frequency to approximate wavelength in meters? #card
	- A. Wavelength in meters equals frequency in hertz multiplied by 300
	- B. Wavelength in meters equals frequency in hertz divided by 300
	- C. Wavelength in meters equals frequency in megahertz divided by 300
	- D. Wavelength in meters equals 300 divided by frequency in megahertz

- [[T3B07]] (A)
In addition to frequency, which of the following is used to identify amateur radio bands? #card
	- A. The approximate wavelength in meters
	- B. Traditional letter/number designators
	- C. Channel numbers
	- D. All these choices are correct

- [[T3B08]] (B)
What frequency range is referred to as VHF? #card
	- A. 30 kHz to 300 kHz
	- B. 30 MHz to 300 MHz
	- C. 300 kHz to 3000 kHz
	- D. 300 MHz to 3000 MHz

- [[T3B09]] (D)
What frequency range is referred to as UHF? #card
	- A. 30 to 300 kHz
	- B. 30 to 300 MHz
	- C. 300 to 3000 kHz
	- D. 300 to 3000 MHz

- [[T3B10]] (C)
What frequency range is referred to as HF? #card
	- A. 300 to 3000 MHz
	- B. 30 to 300 MHz
	- C. 3 to 30 MHz
	- D. 300 to 3000 kHz

- [[T3B11]] (B)
What is the approximate velocity of a radio wave in free space? #card
	- A. 150,000 meters per second
	- B. 300,000,000 meters per second
	- C. 300,000,000 miles per hour
	- D. 150,000 miles per hour