If the amplitude of the magnetic field is ` 3 xx 10 ^(-6) T`, then amplitude of the electric field for a electromagnetic waves is

Options

A. ` 100 V m^(-1) `
B. ` 300 V m ^(-1) `
C. ` 600 V m ^(-1) `
D. ` 900 V m^(-1) `

Answer

D

Explanation

` B_0 = 3 xx 10 ^(-6) T `
` therefore ` Amplitude of electric field
` E_0 = B_0 C `
` = 3 xx 10 ^(-6) xx 3 xx 10 ^(8) `
` = 9 xx 10 ^2 = 900 V m^(-1) `