Email
Chat with tutor
logo

Ask Questions, Get Answers

X
 
Questions  >>  CBSE XII  >>  Physics  >>  Electromagnetic waves
Answer
Comment
Share
Q)

A plane electro magnetic wave of frequency $25\;MHz$ travels in free space along the x- direction At a particular point in space and time the electric vector $\overrightarrow{E}= 6.3 v/m \hat j$. calculate $\overrightarrow{B}$ at this point .

$\begin{array}{1 1} 2.1 \times 10^{-7} \hat k \;t \\ 2.1 \times 10^{-8} \hat k \;t \\ 2.1 \times 10^{-8} \hat j \;t \\ 2.1 \times 10^{-7} \hat j \;t \end{array} $

1 Answer

Comment
A)
Solution :
$B= \large\frac{E}{C}$
$\quad= \large\frac{6.3 v/m}{3 \times 10^8m/s}$
$\quad= 2.1 \times 10^{-8}\;T$
As $\overrightarrow{E}$ is along y- direction and wave is travelling along x- direction .
$\overrightarrow{B}$ is along z direction
$\qquad= 2.1 \times 10^{-8} \hat k \;t$
Help Clay6 to be free
Clay6 needs your help to survive. We have roughly 7 lakh students visiting us monthly. We want to keep our services free and improve with prompt help and advanced solutions by adding more teachers and infrastructure.

A small donation from you will help us reach that goal faster. Talk to your parents, teachers and school and spread the word about clay6. You can pay online or send a cheque.

Thanks for your support.
Continue
Please choose your payment mode to continue
Home Ask Homework Questions
Your payment for is successful.
Continue
Clay6 tutors use Telegram* chat app to help students with their questions and doubts.
Do you have the Telegram chat app installed?
Already installed Install now
*Telegram is a chat app like WhatsApp / Facebook Messenger / Skype.
...