Question 68: EM waves

Question

The amplitude of magnetic field in an electromagnetic wave propagating along y-axis is $6.0 	imes 10^{-7} \mathrm{~T}$. The maximum value of electric field in the electromagnetic wave is

Accepted Answer

In an electromagnetic wave, the maximum value of the electric field E is related to the maximum value of the magnetic field B by the equation
$E = cB$
where c is the speed of light in a vacuum, which is approximately $3 ÃÂ 10^8 m/s$.
Given that the amplitude of the magnetic field B is $6.0 ÃÂ 10^{-7} T$, we can substitute these values into the equation to find the maximum value of the electric field:
$E = (3 ÃÂ 10^8 m/s) 	imes (6.0 ÃÂ 10^{-7} T) = 180 V/m$
Therefore, 180 V/m is the correct answer.

Answer

$6.0 	imes 10^{-7} ~\mathrm{Vm}^{-1}$

Answer

$5 	imes 10^{14} ~\mathrm{Vm}^{-1}$

Answer

$180 ~\mathrm{Vm}^{-1}$

Answer

$2 	imes 10^{15} ~\mathrm{Vm}^{-1}$

EM waves

The amplitude of magnetic field in an electromagnetic wave propagating along y-axis is 6.0 \times 10^{-7} \mathrm{~T}. The maximum value of electric field in the electromagnetic wave is

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