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Biology, 13.12.2020 01:00 KittyLitty
Which best contrasts electric doorbells and audio speakers?
O Doorbells involve rapid changes in the direction of current, and speakers do not.
O Speakers involve rapid changes in the direction of current, and doorbells do not.
O Doorbells require closed circuits in order to work, and speakers do not.
O Speakers require closed circuits in order to work, and doorbells do not.
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Which best contrasts electric doorbells and audio speakers?
O Doorbells involve rapid changes in th...
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