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Physics, 28.07.2019 07:00 genyjoannerubiera
The electric motor in a toy train requires a voltage of 4.9 v. find the ratio of turns on the primary coil to turns on the secondary coil in a transformer that will step the 110 v household voltage down to 4.9 v.
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The electric motor in a toy train requires a voltage of 4.9 v. find the ratio of turns on the primar...
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