68. . The electric motor in a toy train requires a voltage of 4.5 V. Find the ratio of turns on the primary coil to turns on the secondary coil in a transformer that will step the 120-V household voltage down to 4.5 V.
68. . The electric motor in a toy train requires a voltage of 4.5 V. Find the ratio of turns on the primary coil to turns on the secondary coil in a transformer that will step the 120-V household voltage down to 4.5 V.
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Transcribed Image Text:68. • The electric motor in a toy train requires a voltage of 4.5 V. Find
the ratio of turns on the primary coil to turns on the secondary
coil in a transformer that will step the 120-V household voltage
down to 4.5 V.
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