In which of the following situations do the particles of the medium oscillate only parallel to the motion of the wave? energy used in cellular communication
energy used to microwave food
energy transmitted by ocean waves
energy transmitted by the cry of an eagle

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.