0

Guest

Courses New

write an expression for speed of electromagnetic wave in free space?

write an expression for speed of electromagnetic wave in free space?

Grade:8

1 Answers

9893833800
11 Points
6 years ago
From electrostatic,1/4 (3.15)e¤=9×10^9 Nm^2C^-2And From magnetism,U¤/4 (3.15)=10^-7 TmA^-1Therefore, u¤e¤ = u¤/4 (3.15). [4 (3.15)e¤] =10^-7 ×1/9×10^9 = 1/(3×10^8)^2We know that, c=3×10^8 ms^-1Therefore,u¤e¤ = 1/c^2OrC^2 =1/e¤e¤Hence, speed of light is inversely equal to the square root of products of permeability and permittivity.i.e. 3×10^8 ms^-1 which is the speed of light i.e. am waves.....

Think You Can Provide A Better Answer ?

Other Related Questions on General Physics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More