All of the following are incorrect statements of the wave-speed equation except for:
O A. l = vf
O B. v= f 2
O c. v= 1 / 1
O D. f = v2

The modern-day generator works on the principle of electromagnetic induction discovered by michael faraday in 1831-32. faraday discovered that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field.