What occurs in the receiving antenna when a radio signal is transmitted?

Prepare for the SACE Stage 2 Physics Exam. Utilize flashcards and multiple-choice questions with hints and explanations. Get ready with precision!

When a radio signal is transmitted, it creates an electromagnetic wave that propagates through space. When this wave reaches the receiving antenna, the alternating electric and magnetic fields of the wave interact with the free electrons present in the antenna material.

As these electromagnetic waves pass through the antenna, they induce an oscillating electric field, causing the electrons in the antenna to oscillate as well. This oscillation occurs at the same frequency as the transmitted radio wave. Therefore, the electrons mirror the frequency of the incoming signal, which is why the correct response states that the electrons oscillate with the same frequency as the transmitted wave. This oscillation is essential for the antenna to convert the energy of the radio wave into an electrical signal that can be amplified and processed.

In this context, the other choices do not accurately describe the behavior of electrons in the receiving antenna when exposed to a radio signal.

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