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电视为什么会有声音？

电视机通过电流激发扬声器产生声音。具体来说，电视机内部有一个电子音频放大器，它接收电视信号传输的声音信息，并将其转换为电流信号。这个电流信号经过放大后，通过扬声器中的电磁线圈产生声音。

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