sathee Ask SATHEE

Welcome to SATHEE !
Select from 'Menu' to explore our services, or ask SATHEE to get started. Let's embark on this journey of growth together! 🌐📚🚀🎓

I'm relatively new and can sometimes make mistakes.
If you notice any error, such as an incorrect solution, please use the thumbs down icon to aid my learning.
To begin your journey now, click on

Please select your preferred language

JEE PYQ: Electromagnetic Waves Question 28

Question 28 - 2019 (08 Apr 2019 Shift 2)

The magnetic field of an electromagnetic wave is given by: $\vec{B} = 1.6 \times 10^{-6} \cos(2 \times 10^{7} z + 6 \times 10^{15} t)(2\hat{i} + \hat{j}) \frac{Wb}{m^2}$. The associated electric field will be:

(1) $\vec{E} = 4.8 \times 10^{2} \cos(2 \times 10^{7} z - 6 \times 10^{15} t)(2\hat{i} + \hat{j}) \frac{V}{m}$

(2) $\vec{E} = 4.8 \times 10^{2} \cos(2 \times 10^{7} z - 6 \times 10^{15} t)(-2\hat{j} + \hat{i}) \frac{V}{m}$

(3) $\vec{E} = 4.8 \times 10^{2} \cos(2 \times 10^{7} z + 6 \times 10^{15} t)(-\hat{i} + 2\hat{j}) \frac{V}{m}$

(4) $\vec{E} = 4.8 \times 10^{2} \cos(2 \times 10^{7} z + 6 \times 10^{15} t)(\hat{i} - 2\hat{j}) \frac{V}{m}$

Show Answer

Answer: (3)

Solution

$E_0 = cB_0 = 4.8 \times 10^{2}$ V/m. Direction of $\vec{E} \to (-\hat{i} + 2\hat{j})$.


Learning Progress: Step 28 of 41 in this series