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.
Added by Sofia V.
Step 1
This can be expressed as: Vp/Vs = Np/Ns where: Vp = voltage on the primary coil Vs = voltage on the secondary coil Np = number of turns on the primary coil Show more…
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