Energy Carried by Electromagnetic Waves Video Lessons

Video Thumbnail

Concept

Problem: At one instant the electric and magnetic fields at one point of an electromagnetic wave are E=(25i + 350j-50k) V/m and B = 0.0254(7.2i-7.0j - 45.4k)μT.A. What is the pointing vector at this time and position? Find the x component? Sx =B. Find the y component.C. Find the z component. 

FREE Expert Solution

Poynting vector:

S=1μ0(E×B)

S=1μ0(E×B)=(0.0254)×10-64π×10-7|i^j^k^25350-507.2-7.0-45.4|=0.0202[i^(-15890 - 350) -j^(-1135 + 360) + k^(-175-2520)]=0.0202[i^(-16240) - j^(-775)+k^(-2695)]=-328i^ + 15.7j^-54.4k^

96% (164 ratings)
View Complete Written Solution
Problem Details

At one instant the electric and magnetic fields at one point of an electromagnetic wave are E=(25i + 350j-50k) V/m and B = 0.0254(7.2i-7.0j - 45.4k)μT.

A. What is the pointing vector at this time and position? Find the x component? Sx =

B. Find the y component.

C. Find the z component. 

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Energy Carried by Electromagnetic Waves concept. You can view video lessons to learn Energy Carried by Electromagnetic Waves. Or if you need more Energy Carried by Electromagnetic Waves practice, you can also practice Energy Carried by Electromagnetic Waves practice problems.