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Home Q & A Board Science-Related Homework Help Engineering Electrical Engineering
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ggull329 ggull329
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6 years ago
A simple electric doorbell probably uses ________ to ring the bell.
 
  A) an electromagnet B) transistor
  C) a DPDT switch D) a permanent magnet
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icysparklesicysparkles
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6 years ago
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4 years ago
thanks
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