Alarm . An alarm requires an alternating voltage of amplitude 12 V . It is connected to a transformer whose primary has 3000 turns and is connected...
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An alarm requires an alternating voltage of amplitude12 V. It is connected to atransformer whose primary has3000turns and is connected to a

120-Vac line. How manyturns should there be in the secondary?A.30B.300C.3,000D.30,000
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Uploaded by: jmlctan

Subject: Physics, Science

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