Radio Waves Flashcards

All 3 cards in this deck

How are radio waves produced in a transmitting aerial?

By oscillating (alternating) current — electrons oscillating up and down the aerial.

What happens when radio waves are absorbed by a receiving aerial?

They induce oscillations (an alternating current) in the electrical circuit.

How does the frequency of the radio waves emitted by an aerial relate to the current in it?

It is the same as the oscillation frequency of the alternating current.