The vector $\vec E$ and $\vec B$ of an electromagnetic wave in vacuum are
The vector $\vec E$ and $\vec B$ of an electromagnetic wave in vacuum are
- A
along the same direction but of phase by $90^o$
- B
along the same direction and in phase
- C
perpendicular to each other and in phase
- D
perpendicular to each other and out of phase by $90^o$
Similar Questions
The electric field of a plane polarized electromagnetic wave in free space at time $t = 0$ is given by an expression
$\vec E(x,y) = 10\hat j\, cos[(6x + 8z)]$
The magnetic field $\vec B (x,z, t)$ is given by : ($c$ is the velocity of light)
The electric field of a plane polarized electromagnetic wave in free space at time $t = 0$ is given by an expression
$\vec E(x,y) = 10\hat j\, cos[(6x + 8z)]$
The magnetic field $\vec B (x,z, t)$ is given by : ($c$ is the velocity of light)
- [JEE MAIN 2019]
Which scientist first time produced electromagnetic waves in laboratory?
Which scientist first time produced electromagnetic waves in laboratory?
The magnetic field in a travelling electromagnetic wave has a peak value of $20\ n T$. The peak value of electric field strength is......$Vm^{-1}$
The magnetic field in a travelling electromagnetic wave has a peak value of $20\ n T$. The peak value of electric field strength is......$Vm^{-1}$
- [JEE MAIN 2013]
In a certain region uniform electric field $E$ and magnetic field $B$ are present in the opposite direction. At the instant $t = 0,$ a particle of mass $m$ carrying a charge $q$ is given velocity $v_o$ at an angle $\theta ,$ with the $y$ axis, in the $yz$ plane. The time after which the speed of the particle would be minimum is equal to
In a certain region uniform electric field $E$ and magnetic field $B$ are present in the opposite direction. At the instant $t = 0,$ a particle of mass $m$ carrying a charge $q$ is given velocity $v_o$ at an angle $\theta ,$ with the $y$ axis, in the $yz$ plane. The time after which the speed of the particle would be minimum is equal to
The electric field of an electromagnetic wave in free space is given by $\vec E$$=10 cos (10^7t+kx)$$\hat j$ $volt/m $ where $t$ and $x$ are in seconds and metres respectively. It can be inferred that
$(1)$ the wavelength $\lambda$ is $188.4\, m.$
$(2)$ the wave number $k$ is $0.33\,\, rad/m.$
$(3)$ the wave amplitude is $10\, V/m.$
$(4)$ the wave is propagating along $+x$ direction.
Which one of the following pairs of statements is correct ?
The electric field of an electromagnetic wave in free space is given by $\vec E$$=10 cos (10^7t+kx)$$\hat j$ $volt/m $ where $t$ and $x$ are in seconds and metres respectively. It can be inferred that
$(1)$ the wavelength $\lambda$ is $188.4\, m.$
$(2)$ the wave number $k$ is $0.33\,\, rad/m.$
$(3)$ the wave amplitude is $10\, V/m.$
$(4)$ the wave is propagating along $+x$ direction.
Which one of the following pairs of statements is correct ?
- [AIPMT 2010]