A) Sound waves
B) Electrical energy
C) Magnetic energy
D) Variable resistance
Correct Answer: C
Solution :
An audio tape recorder records sounds, usually using magnetic tape, either wound on a reel or in a cassette, for storage. It records a fluctuating signal by moving the tape across a tape head that polarizes the magnetic domains in the tape in proportion to the audio signal. It can be visualized as a specialized form of transformer in which an electrical signal on the input or primary winding is converted to magnetic energy in the magnetic core of the transformer.
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