What does the recording head of the videotape transform the changing electric signal into?

The recording head of the videotape player is responsible for transforming the changing electric signal into a magnetic field. This process is integral to the functioning of magnetic tape recording technology. As the recording head moves across the tape, it creates a magnetic field that aligns the magnetic particles on the tape according to the electric signals it receives. This means that the information being recorded as an electric signal is effectively stored in a form that can later be read back, using the magnetic properties of the tape.

The magnetic field is essential for allowing audio and video data to be recorded and reproduced accurately. When the tape is played back, the magnetic field induces an electric signal in the playback head, which is then converted back into the original video signal for display. This fundamental principle of transforming an electric signal into a magnetic field is what enables the entire process of analog tape recording and playback.