A plane electromagnetic wave, has frequency of 2 . 0 × 10 10 Hz and its energy density is 1 . 02 × 10 - 8 J m - 3 in vacuum. The amplitude of the magnetic field of the wave is close to 1 4 πε 0 = 9 × 10 9 Nm 2 C 2 a

Question

A plane electromagnetic wave, has frequency of 2 . 0 &#215; 10 10 Hz and its energy density is 1 . 02 &#215; 10 - 8 J m - 3 in vacuum. The amplitude of the magnetic field of the wave is close to 1 4 &#960;&#949; 0 = 9 &#215; 10 9 Nm 2 C 2 and speed of light = 3 &#215; 10 8 m s - 1 .

Quantrex Academy · Accepted Answer

Correct answer: B. 160 &#160; nT

Energy Denisty = 1 2 B 2 &#956; 0 B = 2 &#215; &#956; 0 &#215; &#160;Energy density&#160; B = 2 &#215; 4 &#960; &#215; 10 - 7 &#215; 1 . 02 &#215; 10 - 8 = 160 &#215; 10 - 9 = 160 nT

A plane electromagnetic wave, has frequency of 2 . 0 × 10 10 Hz and its energy density is 1 . 02 × 10 - 8 J m - 3 in vacuum. The amplitude of the magnetic field of the wave is close to 1 4 πε 0 = 9 × 10 9 Nm 2 C 2 and speed of light = 3 × 10 8 m s - 1 .

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Correct answer

Step-by-step solution

More from Electromagnetic Waves

A plane electromagnetic wave, has frequency of 2 . 0 &#215; 10 10 Hz and its energy density is 1 . 02 &#215; 10 - 8 J m - 3 in vacuum. The amplitude of the magnetic field of the wave is close to 1 4 &#960;&#949; 0 = 9 &#215; 10 9 Nm 2 C 2 and speed of light = 3 &#215; 10 8 m s - 1 .

Options

Correct answer

Step-by-step solution

More from Electromagnetic Waves

A plane electromagnetic wave, has frequency of 2 . 0 × 10 10 Hz and its energy density is 1 . 02 × 10 - 8 J m - 3 in vacuum. The amplitude of the magnetic field of the wave is close to 1 4 πε 0 = 9 × 10 9 Nm 2 C 2 and speed of light = 3 × 10 8 m s - 1 .