In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.5× 1010 Hz and amplitude 480 V m- 1 . The amplitude of the oscillating magnetic field will be

Question

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.5× 1010 Hz and amplitude 480 V m- 1 . The amplitude of the oscillating magnetic field will be (A)  text1.52× 10- 8 Wbm- 2 (B)  text1.52× 10- 7 Wbm- 2 (C)  text1.6× 10- 6 Wbm- 2 (D)  text1.6× 10- 7 Wbm- 2

Tardigrade Admin · Accepted Answer

If c is the speed of light or electromagnetic wave then the amplitude of electric and magnetic fields are related as, B0=(E0/c) B0=(480/3 × 1 08)=1.6× 10- 6 Wb m- 2

Q. In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of $2.5 \times 1 0^{10} Hz$ and amplitude $480 V m^{- 1}$ . The amplitude of the oscillating magnetic field will be

$1.52 \times 1 0^{- 8} Wb m^{- 2}$

$1.52 \times 1 0^{- 7} Wb m^{- 2}$

$1.6 \times 1 0^{- 6} Wb m^{- 2}$

$1.6 \times 1 0^{- 7} Wb m^{- 2}$

If $c$ is the speed of light or electromagnetic wave then the amplitude of electric and magnetic fields are related as,
$B_{0} = \frac{E _{0}}{c}$
$B_{0} = \frac{480}{3 \times 1 0 ^{8}} = 1.6 \times 1 0^{- 6} Wb m^{- 2}$

Q. In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 2.5×1010Hz and amplitude 480Vm−1 . The amplitude of the oscillating magnetic field will be

1.52×10−8Wbm−2

1.52×10−7Wbm−2

1.6×10−6Wbm−2

1.6×10−7Wbm−2