Fundamental of Electromagnetic Wave

Which one of the following is incorrect:

The electric lines of forces

• start from a positive charge and end at a negative charge

• always intersect each other

• of same polarity repel each other and opposite polarity attract each other

Benjamin, Charlotte, and Nora are exploring a mysterious solenoid. What do they find about the magnetic field inside?

• It's uniform

• It's zero

• It increases with distance from the axis

Which of the following has a minimum wavelength?

• microwave

• gamma rays

• infrared rays

Hey there! Can you guess which electromagnetic waves have wavelengths between ultraviolet light and gamma rays?

• Radio waves

• X-rays

• Microwaves

Which of the following rays is Mia's favorite because it has the maximum frequency?

• UV rays

• Microwave

• Infrared rays

• X-rays

Hey there! Can you help Benjamin figure out the correct order of the electromagnetic spectrum with decreasing frequency?

• Microwaves, Radio waves, Infrared rays, Ultraviolet rays, X-rays

• Radio waves, Infrared rays, Ultraviolet rays, X-rays

• X-rays, Infrared rays, Microwaves, Radio waves, Ultraviolet rays

• X-rays, Ultraviolet rays, Infrared rays, Microwaves, Radio waves

Hey there! Imagine Zoe is surfing a wave in the x-direction. Which of the following will be equal to Ex?

• Ey

• Ez

• Ey+Ez

• zero

Hey there! Let's dive into the world of microwaves! Can you tell me, in this super cool mode, the electric field is totally sideways to the direction of travel, while the magnetic field is not? What's the name of this awesome microwave propagation mode?

• Transverse Electric wave

• Transverse Magnetic waves

• Transverse Electromagnetic waves

• Hybrid waves

Hey there! Can you guess which transmission line is cool enough to accept the TEM wave?

• Copper cable

• Coaxial cable

• Rectangular waveguide

• Circular waveguide

Hey there! Can you guess if TEM waves can travel through rectangular waveguides? Let's have some fun!

• Yes, they can!

• No way!