Question Text
Question 4 :
The frequency of electromagnetic wave in free space is $2$ MHz. When it passes through a region of relative permittivity $\varepsilon_r=4.0$, then its wave length __________ & frequency ______________.
Question 7 :
Instantaneous displacement current $1A$ in the space between the parallel plates of $1\mu F$ capacitor can be established by changing the potential difference at the rate of:<br/>
Question 8 :
Which of the following type of radiations are radiated by on oscillating electric charge?
Question 9 :
If the directions of electric and magnetic field vectors of a plane electromagnetic wave are along positive $y$-direction and positive $z$-direction respectively, then the direction of propagation of the wave is along:
Question 10 :
Choose the correct answer from the alternatives given.<br>The conduction current is the same as displacement current when the source is<br>
Question 11 :
The Electromagnetic wave travelling in a medium has relative permeability $1.3$ and relative premittivity $2.14$. The speed of EM wave in that medium will be.
Question 12 :
A $1000\Omega $ resistance and a capacitor of $100\Omega $ resistance are connected in series a $220 V$ source. when the capacitor is 50% charged, the value of the displacement current is.
Question 13 :
Consider an electromagnetic wave propagating in vacuum. Choose the correct statement :
Question 14 :
Theratio of contributions made by the electric field and magnetic field componentsto the intensity of an electromagnetic wave is: