Referring to the sound-powered telephone circuit shown in illustration, what statement is true concerning the button on the handset as represented by the component labeled "A"? Illustration EL-0093

Question

Accepted Answer

The push button is depressed for the purposes of listening and talking.

Answer

The push button is depressed only for the purposes of talking, and it should be released for listening.

Answer

The push button is depressed only for the purposes of conversing with multiple stations. For a conversation between two stations, it is not needed.

Answer

The push button is depressed only for the purposes of listening, and it should be released for talking.

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