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Questions and Answers
What is a characteristic of electromagnetic waves?
What is a characteristic of electromagnetic waves?
- They require a medium to travel
- They have only electric properties
- They have both magnetic and electric properties (correct)
- They can only travel through solids
What is the direction of electric field lines?
What is the direction of electric field lines?
- They originate on negative charges and terminate on positive charges
- They are continuous, having no beginning or end
- They are perpendicular to magnetic field lines
- They originate on positive charges and terminate on negative charges (correct)
What is the speed of light in vacuum?
What is the speed of light in vacuum?
- 3.00×10^8 m/s (correct)
- 5.00×10^8 m/s
- 2.00×10^8 m/s
- 4.00×10^8 m/s
What happens to electrons in an antenna when an incoming electromagnetic wave is received?
What happens to electrons in an antenna when an incoming electromagnetic wave is received?
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What is the relationship between the E-field strength and the B-field strength in an electromagnetic wave?
What is the relationship between the E-field strength and the B-field strength in an electromagnetic wave?
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What is the unit of B-field strength in the example problem?
What is the unit of B-field strength in the example problem?
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